sys/dev/bwi/if_bwi.c

   1 /*
   2  * Copyright (c) 2007 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Sepherosa Ziehau <sepherosa@gmail.com>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * $DragonFly: src/sys/dev/netif/bwi/if_bwi.c,v 1.19 2008/02/15 11:15:38 sephe Exp $
  35  */
  36
  37 #include <sys/cdefs.h>
  38 __FBSDID("$FreeBSD$");
  39
  40 #include "opt_inet.h"
  41 #include "opt_bwi.h"
  42
  43 #include <sys/param.h>
  44 #include <sys/endian.h>
  45 #include <sys/kernel.h>
  46 #include <sys/bus.h>
  47 #include <sys/malloc.h>
  48 #include <sys/proc.h>
  49 #include <sys/rman.h>
  50 #include <sys/socket.h>
  51 #include <sys/sockio.h>
  52 #include <sys/sysctl.h>
  53 #include <sys/systm.h>
  54 #include <sys/taskqueue.h>
  55
  56 #include <net/if.h>
  57 #include <net/if_dl.h>
  58 #include <net/if_media.h>
  59 #include <net/if_types.h>
  60 #include <net/if_arp.h>
  61 #include <net/ethernet.h>
  62 #include <net/if_llc.h>
  63
  64 #include <net80211/ieee80211_var.h>
  65 #include <net80211/ieee80211_radiotap.h>
  66 #include <net80211/ieee80211_regdomain.h>
  67 #include <net80211/ieee80211_phy.h>
  68 #include <net80211/ieee80211_ratectl.h>
  69
  70 #include <net/bpf.h>
  71
  72 #ifdef INET
  73 #include <netinet/in.h>
  74 #include <netinet/if_ether.h>
  75 #endif
  76
  77 #include <machine/bus.h>
  78
  79 #include <dev/pci/pcivar.h>
  80 #include <dev/pci/pcireg.h>
  81
  82 #include <dev/bwi/bitops.h>
  83 #include <dev/bwi/if_bwireg.h>
  84 #include <dev/bwi/if_bwivar.h>
  85 #include <dev/bwi/bwimac.h>
  86 #include <dev/bwi/bwirf.h>
  87
  88 struct bwi_clock_freq {
  89         u_int           clkfreq_min;
  90         u_int           clkfreq_max;
  91 };
  92
  93 struct bwi_myaddr_bssid {
  94         uint8_t         myaddr[IEEE80211_ADDR_LEN];
  95         uint8_t         bssid[IEEE80211_ADDR_LEN];
  96 } __packed;
  97
  98 static struct ieee80211vap *bwi_vap_create(struct ieee80211com *,
  99                    const char [IFNAMSIZ], int, int, int,
 100                    const uint8_t [IEEE80211_ADDR_LEN],
 101                    const uint8_t [IEEE80211_ADDR_LEN]);
 102 static void     bwi_vap_delete(struct ieee80211vap *);
 103 static void     bwi_init(void *);
 104 static int      bwi_ioctl(struct ifnet *, u_long, caddr_t);
 105 static void     bwi_start(struct ifnet *);
 106 static void     bwi_start_locked(struct ifnet *);
 107 static int      bwi_raw_xmit(struct ieee80211_node *, struct mbuf *,
 108                         const struct ieee80211_bpf_params *);
 109 static void     bwi_watchdog(struct ifnet *);
 110 static void     bwi_scan_start(struct ieee80211com *);
 111 static void     bwi_set_channel(struct ieee80211com *);
 112 static void     bwi_scan_end(struct ieee80211com *);
 113 static int      bwi_newstate(struct ieee80211vap *, enum ieee80211_state, int);
 114 static void     bwi_updateslot(struct ifnet *);
 115 static int      bwi_media_change(struct ifnet *);
 116
 117 static void     bwi_calibrate(void *);
 118
 119 static int      bwi_calc_rssi(struct bwi_softc *, const struct bwi_rxbuf_hdr *);
 120 static int      bwi_calc_noise(struct bwi_softc *);
 121 static __inline uint8_t bwi_ofdm_plcp2rate(const uint32_t *);
 122 static __inline uint8_t bwi_ds_plcp2rate(const struct ieee80211_ds_plcp_hdr *);
 123 static void     bwi_rx_radiotap(struct bwi_softc *, struct mbuf *,
 124                         struct bwi_rxbuf_hdr *, const void *, int, int, int);
 125
 126 static void     bwi_restart(void *, int);
 127 static void     bwi_init_statechg(struct bwi_softc *, int);
 128 static void     bwi_stop(struct bwi_softc *, int);
 129 static void     bwi_stop_locked(struct bwi_softc *, int);
 130 static int      bwi_newbuf(struct bwi_softc *, int, int);
 131 static int      bwi_encap(struct bwi_softc *, int, struct mbuf *,
 132                           struct ieee80211_node *);
 133 static int      bwi_encap_raw(struct bwi_softc *, int, struct mbuf *,
 134                           struct ieee80211_node *,
 135                           const struct ieee80211_bpf_params *);
 136
 137 static void     bwi_init_rxdesc_ring32(struct bwi_softc *, uint32_t,
 138                                        bus_addr_t, int, int);
 139 static void     bwi_reset_rx_ring32(struct bwi_softc *, uint32_t);
 140
 141 static int      bwi_init_tx_ring32(struct bwi_softc *, int);
 142 static int      bwi_init_rx_ring32(struct bwi_softc *);
 143 static int      bwi_init_txstats32(struct bwi_softc *);
 144 static void     bwi_free_tx_ring32(struct bwi_softc *, int);
 145 static void     bwi_free_rx_ring32(struct bwi_softc *);
 146 static void     bwi_free_txstats32(struct bwi_softc *);
 147 static void     bwi_setup_rx_desc32(struct bwi_softc *, int, bus_addr_t, int);
 148 static void     bwi_setup_tx_desc32(struct bwi_softc *, struct bwi_ring_data *,
 149                                     int, bus_addr_t, int);
 150 static int      bwi_rxeof32(struct bwi_softc *);
 151 static void     bwi_start_tx32(struct bwi_softc *, uint32_t, int);
 152 static void     bwi_txeof_status32(struct bwi_softc *);
 153
 154 static int      bwi_init_tx_ring64(struct bwi_softc *, int);
 155 static int      bwi_init_rx_ring64(struct bwi_softc *);
 156 static int      bwi_init_txstats64(struct bwi_softc *);
 157 static void     bwi_free_tx_ring64(struct bwi_softc *, int);
 158 static void     bwi_free_rx_ring64(struct bwi_softc *);
 159 static void     bwi_free_txstats64(struct bwi_softc *);
 160 static void     bwi_setup_rx_desc64(struct bwi_softc *, int, bus_addr_t, int);
 161 static void     bwi_setup_tx_desc64(struct bwi_softc *, struct bwi_ring_data *,
 162                                     int, bus_addr_t, int);
 163 static int      bwi_rxeof64(struct bwi_softc *);
 164 static void     bwi_start_tx64(struct bwi_softc *, uint32_t, int);
 165 static void     bwi_txeof_status64(struct bwi_softc *);
 166
 167 static int      bwi_rxeof(struct bwi_softc *, int);
 168 static void     _bwi_txeof(struct bwi_softc *, uint16_t, int, int);
 169 static void     bwi_txeof(struct bwi_softc *);
 170 static void     bwi_txeof_status(struct bwi_softc *, int);
 171 static void     bwi_enable_intrs(struct bwi_softc *, uint32_t);
 172 static void     bwi_disable_intrs(struct bwi_softc *, uint32_t);
 173
 174 static int      bwi_dma_alloc(struct bwi_softc *);
 175 static void     bwi_dma_free(struct bwi_softc *);
 176 static int      bwi_dma_ring_alloc(struct bwi_softc *, bus_dma_tag_t,
 177                                    struct bwi_ring_data *, bus_size_t,
 178                                    uint32_t);
 179 static int      bwi_dma_mbuf_create(struct bwi_softc *);
 180 static void     bwi_dma_mbuf_destroy(struct bwi_softc *, int, int);
 181 static int      bwi_dma_txstats_alloc(struct bwi_softc *, uint32_t, bus_size_t);
 182 static void     bwi_dma_txstats_free(struct bwi_softc *);
 183 static void     bwi_dma_ring_addr(void *, bus_dma_segment_t *, int, int);
 184 static void     bwi_dma_buf_addr(void *, bus_dma_segment_t *, int,
 185                                  bus_size_t, int);
 186
 187 static void     bwi_power_on(struct bwi_softc *, int);
 188 static int      bwi_power_off(struct bwi_softc *, int);
 189 static int      bwi_set_clock_mode(struct bwi_softc *, enum bwi_clock_mode);
 190 static int      bwi_set_clock_delay(struct bwi_softc *);
 191 static void     bwi_get_clock_freq(struct bwi_softc *, struct bwi_clock_freq *);
 192 static int      bwi_get_pwron_delay(struct bwi_softc *sc);
 193 static void     bwi_set_addr_filter(struct bwi_softc *, uint16_t,
 194                                     const uint8_t *);
 195 static void     bwi_set_bssid(struct bwi_softc *, const uint8_t *);
 196
 197 static void     bwi_get_card_flags(struct bwi_softc *);
 198 static void     bwi_get_eaddr(struct bwi_softc *, uint16_t, uint8_t *);
 199
 200 static int      bwi_bus_attach(struct bwi_softc *);
 201 static int      bwi_bbp_attach(struct bwi_softc *);
 202 static int      bwi_bbp_power_on(struct bwi_softc *, enum bwi_clock_mode);
 203 static void     bwi_bbp_power_off(struct bwi_softc *);
 204
 205 static const char *bwi_regwin_name(const struct bwi_regwin *);
 206 static uint32_t bwi_regwin_disable_bits(struct bwi_softc *);
 207 static void     bwi_regwin_info(struct bwi_softc *, uint16_t *, uint8_t *);
 208 static int      bwi_regwin_select(struct bwi_softc *, int);
 209
 210 static void     bwi_led_attach(struct bwi_softc *);
 211 static void     bwi_led_newstate(struct bwi_softc *, enum ieee80211_state);
 212 static void     bwi_led_event(struct bwi_softc *, int);
 213 static void     bwi_led_blink_start(struct bwi_softc *, int, int);
 214 static void     bwi_led_blink_next(void *);
 215 static void     bwi_led_blink_end(void *);
 216
 217 static const struct {
 218         uint16_t        did_min;
 219         uint16_t        did_max;
 220         uint16_t        bbp_id;
 221 } bwi_bbpid_map[] = {
 222         { 0x4301, 0x4301, 0x4301 },
 223         { 0x4305, 0x4307, 0x4307 },
 224         { 0x4403, 0x4403, 0x4402 },
 225         { 0x4610, 0x4615, 0x4610 },
 226         { 0x4710, 0x4715, 0x4710 },
 227         { 0x4720, 0x4725, 0x4309 }
 228 };
 229
 230 static const struct {
 231         uint16_t        bbp_id;
 232         int             nregwin;
 233 } bwi_regwin_count[] = {
 234         { 0x4301, 5 },
 235         { 0x4306, 6 },
 236         { 0x4307, 5 },
 237         { 0x4310, 8 },
 238         { 0x4401, 3 },
 239         { 0x4402, 3 },
 240         { 0x4610, 9 },
 241         { 0x4704, 9 },
 242         { 0x4710, 9 },
 243         { 0x5365, 7 }
 244 };
 245
 246 #define CLKSRC(src)                             \
 247 [BWI_CLKSRC_ ## src] = {                        \
 248         .freq_min = BWI_CLKSRC_ ##src## _FMIN,  \
 249         .freq_max = BWI_CLKSRC_ ##src## _FMAX   \
 250 }
 251
 252 static const struct {
 253         u_int   freq_min;
 254         u_int   freq_max;
 255 } bwi_clkfreq[BWI_CLKSRC_MAX] = {
 256         CLKSRC(LP_OSC),
 257         CLKSRC(CS_OSC),
 258         CLKSRC(PCI)
 259 };
 260
 261 #undef CLKSRC
 262
 263 #define VENDOR_LED_ACT(vendor)                          \
 264 {                                                       \
 265         .vid = PCI_VENDOR_##vendor,                     \
 266         .led_act = { BWI_VENDOR_LED_ACT_##vendor }      \
 267 }
 268
 269 static const struct {
 270 #define PCI_VENDOR_COMPAQ       0x0e11
 271 #define PCI_VENDOR_LINKSYS      0x1737
 272         uint16_t        vid;
 273         uint8_t         led_act[BWI_LED_MAX];
 274 } bwi_vendor_led_act[] = {
 275         VENDOR_LED_ACT(COMPAQ),
 276         VENDOR_LED_ACT(LINKSYS)
 277 #undef PCI_VENDOR_LINKSYS
 278 #undef PCI_VENDOR_COMPAQ
 279 };
 280
 281 static const uint8_t bwi_default_led_act[BWI_LED_MAX] =
 282         { BWI_VENDOR_LED_ACT_DEFAULT };
 283
 284 #undef VENDOR_LED_ACT
 285
 286 static const struct {
 287         int     on_dur;
 288         int     off_dur;
 289 } bwi_led_duration[109] = {
 290         [0]     = { 400, 100 },
 291         [2]     = { 150, 75 },
 292         [4]     = { 90, 45 },
 293         [11]    = { 66, 34 },
 294         [12]    = { 53, 26 },
 295         [18]    = { 42, 21 },
 296         [22]    = { 35, 17 },
 297         [24]    = { 32, 16 },
 298         [36]    = { 21, 10 },
 299         [48]    = { 16, 8 },
 300         [72]    = { 11, 5 },
 301         [96]    = { 9, 4 },
 302         [108]   = { 7, 3 }
 303 };
 304
 305 #ifdef BWI_DEBUG
 306 #ifdef BWI_DEBUG_VERBOSE
 307 static uint32_t bwi_debug = BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_TXPOWER;
 308 #else
 309 static uint32_t bwi_debug;
 310 #endif
 311 TUNABLE_INT("hw.bwi.debug", (int *)&bwi_debug);
 312 #endif  /* BWI_DEBUG */
 313
 314 static const uint8_t bwi_zero_addr[IEEE80211_ADDR_LEN];
 315
 316 uint16_t
 317 bwi_read_sprom(struct bwi_softc *sc, uint16_t ofs)
 318 {
 319         return CSR_READ_2(sc, ofs + BWI_SPROM_START);
 320 }
 321
 322 static __inline void
 323 bwi_setup_desc32(struct bwi_softc *sc, struct bwi_desc32 *desc_array,
 324                  int ndesc, int desc_idx, bus_addr_t paddr, int buf_len,
 325                  int tx)
 326 {
 327         struct bwi_desc32 *desc = &desc_array[desc_idx];
 328         uint32_t ctrl, addr, addr_hi, addr_lo;
 329
 330         addr_lo = __SHIFTOUT(paddr, BWI_DESC32_A_ADDR_MASK);
 331         addr_hi = __SHIFTOUT(paddr, BWI_DESC32_A_FUNC_MASK);
 332
 333         addr = __SHIFTIN(addr_lo, BWI_DESC32_A_ADDR_MASK) |
 334                __SHIFTIN(BWI_DESC32_A_FUNC_TXRX, BWI_DESC32_A_FUNC_MASK);
 335
 336         ctrl = __SHIFTIN(buf_len, BWI_DESC32_C_BUFLEN_MASK) |
 337                __SHIFTIN(addr_hi, BWI_DESC32_C_ADDRHI_MASK);
 338         if (desc_idx == ndesc - 1)
 339                 ctrl |= BWI_DESC32_C_EOR;
 340         if (tx) {
 341                 /* XXX */
 342                 ctrl |= BWI_DESC32_C_FRAME_START |
 343                         BWI_DESC32_C_FRAME_END |
 344                         BWI_DESC32_C_INTR;
 345         }
 346
 347         desc->addr = htole32(addr);
 348         desc->ctrl = htole32(ctrl);
 349 }
 350
 351 int
 352 bwi_attach(struct bwi_softc *sc)
 353 {
 354         struct ieee80211com *ic;
 355         device_t dev = sc->sc_dev;
 356         struct ifnet *ifp;
 357         struct bwi_mac *mac;
 358         struct bwi_phy *phy;
 359         int i, error;
 360         uint8_t bands;
 361         uint8_t macaddr[IEEE80211_ADDR_LEN];
 362
 363         BWI_LOCK_INIT(sc);
 364
 365         /*
 366          * Initialize taskq and various tasks
 367          */
 368         sc->sc_tq = taskqueue_create("bwi_taskq", M_NOWAIT | M_ZERO,
 369                 taskqueue_thread_enqueue, &sc->sc_tq);
 370         taskqueue_start_threads(&sc->sc_tq, 1, PI_NET, "%s taskq",
 371                 device_get_nameunit(dev));
 372         TASK_INIT(&sc->sc_restart_task, 0, bwi_restart, sc);
 373
 374         callout_init_mtx(&sc->sc_calib_ch, &sc->sc_mtx, 0);
 375
 376         /*
 377          * Initialize sysctl variables
 378          */
 379         sc->sc_fw_version = BWI_FW_VERSION3;
 380         sc->sc_led_idle = (2350 * hz) / 1000;
 381         sc->sc_led_blink = 1;
 382         sc->sc_txpwr_calib = 1;
 383 #ifdef BWI_DEBUG
 384         sc->sc_debug = bwi_debug;
 385 #endif
 386         bwi_power_on(sc, 1);
 387
 388         error = bwi_bbp_attach(sc);
 389         if (error)
 390                 goto fail;
 391
 392         error = bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
 393         if (error)
 394                 goto fail;
 395
 396         if (BWI_REGWIN_EXIST(&sc->sc_com_regwin)) {
 397                 error = bwi_set_clock_delay(sc);
 398                 if (error)
 399                         goto fail;
 400
 401                 error = bwi_set_clock_mode(sc, BWI_CLOCK_MODE_FAST);
 402                 if (error)
 403                         goto fail;
 404
 405                 error = bwi_get_pwron_delay(sc);
 406                 if (error)
 407                         goto fail;
 408         }
 409
 410         error = bwi_bus_attach(sc);
 411         if (error)
 412                 goto fail;
 413
 414         bwi_get_card_flags(sc);
 415
 416         bwi_led_attach(sc);
 417
 418         for (i = 0; i < sc->sc_nmac; ++i) {
 419                 struct bwi_regwin *old;
 420
 421                 mac = &sc->sc_mac[i];
 422                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old);
 423                 if (error)
 424                         goto fail;
 425
 426                 error = bwi_mac_lateattach(mac);
 427                 if (error)
 428                         goto fail;
 429
 430                 error = bwi_regwin_switch(sc, old, NULL);
 431                 if (error)
 432                         goto fail;
 433         }
 434
 435         /*
 436          * XXX First MAC is known to exist
 437          * TODO2
 438          */
 439         mac = &sc->sc_mac[0];
 440         phy = &mac->mac_phy;
 441
 442         bwi_bbp_power_off(sc);
 443
 444         error = bwi_dma_alloc(sc);
 445         if (error)
 446                 goto fail;
 447
 448         ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
 449         if (ifp == NULL) {
 450                 device_printf(dev, "can not if_alloc()\n");
 451                 error = ENOSPC;
 452                 goto fail;
 453         }
 454         ic = ifp->if_l2com;
 455
 456         /* set these up early for if_printf use */
 457         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 458
 459         ifp->if_softc = sc;
 460         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 461         ifp->if_init = bwi_init;
 462         ifp->if_ioctl = bwi_ioctl;
 463         ifp->if_start = bwi_start;
 464         ifp->if_watchdog = bwi_watchdog;
 465         IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
 466         ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
 467         IFQ_SET_READY(&ifp->if_snd);
 468
 469         /*
 470          * Setup ratesets, phytype, channels and get MAC address
 471          */
 472         bands = 0;
 473         if (phy->phy_mode == IEEE80211_MODE_11B ||
 474             phy->phy_mode == IEEE80211_MODE_11G) {
 475                 setbit(&bands, IEEE80211_MODE_11B);
 476                 if (phy->phy_mode == IEEE80211_MODE_11B) {
 477                         ic->ic_phytype = IEEE80211_T_DS;
 478                 } else {
 479                         ic->ic_phytype = IEEE80211_T_OFDM;
 480                         setbit(&bands, IEEE80211_MODE_11G);
 481                 }
 482
 483                 bwi_get_eaddr(sc, BWI_SPROM_11BG_EADDR, macaddr);
 484                 if (IEEE80211_IS_MULTICAST(macaddr)) {
 485                         bwi_get_eaddr(sc, BWI_SPROM_11A_EADDR, macaddr);
 486                         if (IEEE80211_IS_MULTICAST(macaddr)) {
 487                                 device_printf(dev,
 488                                     "invalid MAC address: %6D\n",
 489                                     macaddr, ":");
 490                         }
 491                 }
 492         } else if (phy->phy_mode == IEEE80211_MODE_11A) {
 493                 /* TODO:11A */
 494                 setbit(&bands, IEEE80211_MODE_11A);
 495                 error = ENXIO;
 496                 goto fail;
 497         } else {
 498                 panic("unknown phymode %d\n", phy->phy_mode);
 499         }
 500
 501         /* Get locale */
 502         sc->sc_locale = __SHIFTOUT(bwi_read_sprom(sc, BWI_SPROM_CARD_INFO),
 503                                    BWI_SPROM_CARD_INFO_LOCALE);
 504         DPRINTF(sc, BWI_DBG_ATTACH, "locale: %d\n", sc->sc_locale);
 505         /* XXX use locale */
 506         ieee80211_init_channels(ic, NULL, &bands);
 507
 508         ic->ic_ifp = ifp;
 509         ic->ic_caps = IEEE80211_C_STA |
 510                       IEEE80211_C_SHSLOT |
 511                       IEEE80211_C_SHPREAMBLE |
 512                       IEEE80211_C_WPA |
 513                       IEEE80211_C_BGSCAN |
 514                       IEEE80211_C_MONITOR;
 515         ic->ic_opmode = IEEE80211_M_STA;
 516         ieee80211_ifattach(ic, macaddr);
 517
 518         ic->ic_headroom = sizeof(struct bwi_txbuf_hdr);
 519
 520         /* override default methods */
 521         ic->ic_vap_create = bwi_vap_create;
 522         ic->ic_vap_delete = bwi_vap_delete;
 523         ic->ic_raw_xmit = bwi_raw_xmit;
 524         ic->ic_updateslot = bwi_updateslot;
 525         ic->ic_scan_start = bwi_scan_start;
 526         ic->ic_scan_end = bwi_scan_end;
 527         ic->ic_set_channel = bwi_set_channel;
 528
 529         sc->sc_rates = ieee80211_get_ratetable(ic->ic_curchan);
 530
 531         ieee80211_radiotap_attach(ic,
 532             &sc->sc_tx_th.wt_ihdr, sizeof(sc->sc_tx_th),
 533                 BWI_TX_RADIOTAP_PRESENT,
 534             &sc->sc_rx_th.wr_ihdr, sizeof(sc->sc_rx_th),
 535                 BWI_RX_RADIOTAP_PRESENT);
 536
 537         /*
 538          * Add sysctl nodes
 539          */
 540         SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
 541                         SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 542                         "fw_version", CTLFLAG_RD, &sc->sc_fw_version, 0,
 543                         "Firmware version");
 544         SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
 545                         SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 546                         "led_idle", CTLFLAG_RW, &sc->sc_led_idle, 0,
 547                         "# ticks before LED enters idle state");
 548         SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
 549                        SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 550                        "led_blink", CTLFLAG_RW, &sc->sc_led_blink, 0,
 551                        "Allow LED to blink");
 552         SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
 553                        SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 554                        "txpwr_calib", CTLFLAG_RW, &sc->sc_txpwr_calib, 0,
 555                        "Enable software TX power calibration");
 556 #ifdef BWI_DEBUG
 557         SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
 558                         SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
 559                         "debug", CTLFLAG_RW, &sc->sc_debug, 0, "Debug flags");
 560 #endif
 561         if (bootverbose)
 562                 ieee80211_announce(ic);
 563
 564         return (0);
 565 fail:
 566         BWI_LOCK_DESTROY(sc);
 567         return (error);
 568 }
 569
 570 int
 571 bwi_detach(struct bwi_softc *sc)
 572 {
 573         struct ifnet *ifp = sc->sc_ifp;
 574         struct ieee80211com *ic = ifp->if_l2com;
 575         int i;
 576
 577         bwi_stop(sc, 1);
 578         callout_drain(&sc->sc_led_blink_ch);
 579         callout_drain(&sc->sc_calib_ch);
 580         ieee80211_ifdetach(ic);
 581
 582         for (i = 0; i < sc->sc_nmac; ++i)
 583                 bwi_mac_detach(&sc->sc_mac[i]);
 584         bwi_dma_free(sc);
 585         if_free(ifp);
 586         taskqueue_free(sc->sc_tq);
 587
 588         BWI_LOCK_DESTROY(sc);
 589
 590         return (0);
 591 }
 592
 593 static struct ieee80211vap *
 594 bwi_vap_create(struct ieee80211com *ic,
 595         const char name[IFNAMSIZ], int unit, int opmode, int flags,
 596         const uint8_t bssid[IEEE80211_ADDR_LEN],
 597         const uint8_t mac[IEEE80211_ADDR_LEN])
 598 {
 599         struct bwi_vap *bvp;
 600         struct ieee80211vap *vap;
 601
 602         if (!TAILQ_EMPTY(&ic->ic_vaps))         /* only one at a time */
 603                 return NULL;
 604         bvp = (struct bwi_vap *) malloc(sizeof(struct bwi_vap),
 605             M_80211_VAP, M_WAITOK | M_ZERO);
 606         if (bvp == NULL)
 607                 return NULL;
 608         vap = &bvp->bv_vap;
 609         /* enable s/w bmiss handling for sta mode */
 610         ieee80211_vap_setup(ic, vap, name, unit, opmode,
 611             flags | IEEE80211_CLONE_NOBEACONS, bssid, mac);
 612
 613         /* override default methods */
 614         bvp->bv_newstate = vap->iv_newstate;
 615         vap->iv_newstate = bwi_newstate;
 616 #if 0
 617         vap->iv_update_beacon = bwi_beacon_update;
 618 #endif
 619         ieee80211_ratectl_init(vap);
 620
 621         /* complete setup */
 622         ieee80211_vap_attach(vap, bwi_media_change, ieee80211_media_status);
 623         ic->ic_opmode = opmode;
 624         return vap;
 625 }
 626
 627 static void
 628 bwi_vap_delete(struct ieee80211vap *vap)
 629 {
 630         struct bwi_vap *bvp = BWI_VAP(vap);
 631
 632         ieee80211_ratectl_deinit(vap);
 633         ieee80211_vap_detach(vap);
 634         free(bvp, M_80211_VAP);
 635 }
 636
 637 void
 638 bwi_suspend(struct bwi_softc *sc)
 639 {
 640         bwi_stop(sc, 1);
 641 }
 642
 643 void
 644 bwi_resume(struct bwi_softc *sc)
 645 {
 646         struct ifnet *ifp = sc->sc_ifp;
 647
 648         if (ifp->if_flags & IFF_UP)
 649                 bwi_init(sc);
 650 }
 651
 652 int
 653 bwi_shutdown(struct bwi_softc *sc)
 654 {
 655         bwi_stop(sc, 1);
 656         return 0;
 657 }
 658
 659 static void
 660 bwi_power_on(struct bwi_softc *sc, int with_pll)
 661 {
 662         uint32_t gpio_in, gpio_out, gpio_en;
 663         uint16_t status;
 664
 665         gpio_in = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_IN, 4);
 666         if (gpio_in & BWI_PCIM_GPIO_PWR_ON)
 667                 goto back;
 668
 669         gpio_out = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
 670         gpio_en = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, 4);
 671
 672         gpio_out |= BWI_PCIM_GPIO_PWR_ON;
 673         gpio_en |= BWI_PCIM_GPIO_PWR_ON;
 674         if (with_pll) {
 675                 /* Turn off PLL first */
 676                 gpio_out |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 677                 gpio_en |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 678         }
 679
 680         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 681         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, gpio_en, 4);
 682         DELAY(1000);
 683
 684         if (with_pll) {
 685                 /* Turn on PLL */
 686                 gpio_out &= ~BWI_PCIM_GPIO_PLL_PWR_OFF;
 687                 pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 688                 DELAY(5000);
 689         }
 690
 691 back:
 692         /* Clear "Signaled Target Abort" */
 693         status = pci_read_config(sc->sc_dev, PCIR_STATUS, 2);
 694         status &= ~PCIM_STATUS_STABORT;
 695         pci_write_config(sc->sc_dev, PCIR_STATUS, status, 2);
 696 }
 697
 698 static int
 699 bwi_power_off(struct bwi_softc *sc, int with_pll)
 700 {
 701         uint32_t gpio_out, gpio_en;
 702
 703         pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_IN, 4); /* dummy read */
 704         gpio_out = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
 705         gpio_en = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, 4);
 706
 707         gpio_out &= ~BWI_PCIM_GPIO_PWR_ON;
 708         gpio_en |= BWI_PCIM_GPIO_PWR_ON;
 709         if (with_pll) {
 710                 gpio_out |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 711                 gpio_en |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 712         }
 713
 714         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 715         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, gpio_en, 4);
 716         return 0;
 717 }
 718
 719 int
 720 bwi_regwin_switch(struct bwi_softc *sc, struct bwi_regwin *rw,
 721                   struct bwi_regwin **old_rw)
 722 {
 723         int error;
 724
 725         if (old_rw != NULL)
 726                 *old_rw = NULL;
 727
 728         if (!BWI_REGWIN_EXIST(rw))
 729                 return EINVAL;
 730
 731         if (sc->sc_cur_regwin != rw) {
 732                 error = bwi_regwin_select(sc, rw->rw_id);
 733                 if (error) {
 734                         device_printf(sc->sc_dev, "can't select regwin %d\n",
 735                                   rw->rw_id);
 736                         return error;
 737                 }
 738         }
 739
 740         if (old_rw != NULL)
 741                 *old_rw = sc->sc_cur_regwin;
 742         sc->sc_cur_regwin = rw;
 743         return 0;
 744 }
 745
 746 static int
 747 bwi_regwin_select(struct bwi_softc *sc, int id)
 748 {
 749         uint32_t win = BWI_PCIM_REGWIN(id);
 750         int i;
 751
 752 #define RETRY_MAX       50
 753         for (i = 0; i < RETRY_MAX; ++i) {
 754                 pci_write_config(sc->sc_dev, BWI_PCIR_SEL_REGWIN, win, 4);
 755                 if (pci_read_config(sc->sc_dev, BWI_PCIR_SEL_REGWIN, 4) == win)
 756                         return 0;
 757                 DELAY(10);
 758         }
 759 #undef RETRY_MAX
 760
 761         return ENXIO;
 762 }
 763
 764 static void
 765 bwi_regwin_info(struct bwi_softc *sc, uint16_t *type, uint8_t *rev)
 766 {
 767         uint32_t val;
 768
 769         val = CSR_READ_4(sc, BWI_ID_HI);
 770         *type = BWI_ID_HI_REGWIN_TYPE(val);
 771         *rev = BWI_ID_HI_REGWIN_REV(val);
 772
 773         DPRINTF(sc, BWI_DBG_ATTACH, "regwin: type 0x%03x, rev %d, "
 774                 "vendor 0x%04x\n", *type, *rev,
 775                 __SHIFTOUT(val, BWI_ID_HI_REGWIN_VENDOR_MASK));
 776 }
 777
 778 static int
 779 bwi_bbp_attach(struct bwi_softc *sc)
 780 {
 781 #define N(arr)  (int)(sizeof(arr) / sizeof(arr[0]))
 782         uint16_t bbp_id, rw_type;
 783         uint8_t rw_rev;
 784         uint32_t info;
 785         int error, nregwin, i;
 786
 787         /*
 788          * Get 0th regwin information
 789          * NOTE: 0th regwin should exist
 790          */
 791         error = bwi_regwin_select(sc, 0);
 792         if (error) {
 793                 device_printf(sc->sc_dev, "can't select regwin 0\n");
 794                 return error;
 795         }
 796         bwi_regwin_info(sc, &rw_type, &rw_rev);
 797
 798         /*
 799          * Find out BBP id
 800          */
 801         bbp_id = 0;
 802         info = 0;
 803         if (rw_type == BWI_REGWIN_T_COM) {
 804                 info = CSR_READ_4(sc, BWI_INFO);
 805                 bbp_id = __SHIFTOUT(info, BWI_INFO_BBPID_MASK);
 806
 807                 BWI_CREATE_REGWIN(&sc->sc_com_regwin, 0, rw_type, rw_rev);
 808
 809                 sc->sc_cap = CSR_READ_4(sc, BWI_CAPABILITY);
 810         } else {
 811                 for (i = 0; i < N(bwi_bbpid_map); ++i) {
 812                         if (sc->sc_pci_did >= bwi_bbpid_map[i].did_min &&
 813                             sc->sc_pci_did <= bwi_bbpid_map[i].did_max) {
 814                                 bbp_id = bwi_bbpid_map[i].bbp_id;
 815                                 break;
 816                         }
 817                 }
 818                 if (bbp_id == 0) {
 819                         device_printf(sc->sc_dev, "no BBP id for device id "
 820                                       "0x%04x\n", sc->sc_pci_did);
 821                         return ENXIO;
 822                 }
 823
 824                 info = __SHIFTIN(sc->sc_pci_revid, BWI_INFO_BBPREV_MASK) |
 825                        __SHIFTIN(0, BWI_INFO_BBPPKG_MASK);
 826         }
 827
 828         /*
 829          * Find out number of regwins
 830          */
 831         nregwin = 0;
 832         if (rw_type == BWI_REGWIN_T_COM && rw_rev >= 4) {
 833                 nregwin = __SHIFTOUT(info, BWI_INFO_NREGWIN_MASK);
 834         } else {
 835                 for (i = 0; i < N(bwi_regwin_count); ++i) {
 836                         if (bwi_regwin_count[i].bbp_id == bbp_id) {
 837                                 nregwin = bwi_regwin_count[i].nregwin;
 838                                 break;
 839                         }
 840                 }
 841                 if (nregwin == 0) {
 842                         device_printf(sc->sc_dev, "no number of win for "
 843                                       "BBP id 0x%04x\n", bbp_id);
 844                         return ENXIO;
 845                 }
 846         }
 847
 848         /* Record BBP id/rev for later using */
 849         sc->sc_bbp_id = bbp_id;
 850         sc->sc_bbp_rev = __SHIFTOUT(info, BWI_INFO_BBPREV_MASK);
 851         sc->sc_bbp_pkg = __SHIFTOUT(info, BWI_INFO_BBPPKG_MASK);
 852         device_printf(sc->sc_dev, "BBP: id 0x%04x, rev 0x%x, pkg %d\n",
 853                       sc->sc_bbp_id, sc->sc_bbp_rev, sc->sc_bbp_pkg);
 854
 855         DPRINTF(sc, BWI_DBG_ATTACH, "nregwin %d, cap 0x%08x\n",
 856                 nregwin, sc->sc_cap);
 857
 858         /*
 859          * Create rest of the regwins
 860          */
 861
 862         /* Don't re-create common regwin, if it is already created */
 863         i = BWI_REGWIN_EXIST(&sc->sc_com_regwin) ? 1 : 0;
 864
 865         for (; i < nregwin; ++i) {
 866                 /*
 867                  * Get regwin information
 868                  */
 869                 error = bwi_regwin_select(sc, i);
 870                 if (error) {
 871                         device_printf(sc->sc_dev,
 872                                       "can't select regwin %d\n", i);
 873                         return error;
 874                 }
 875                 bwi_regwin_info(sc, &rw_type, &rw_rev);
 876
 877                 /*
 878                  * Try attach:
 879                  * 1) Bus (PCI/PCIE) regwin
 880                  * 2) MAC regwin
 881                  * Ignore rest types of regwin
 882                  */
 883                 if (rw_type == BWI_REGWIN_T_BUSPCI ||
 884                     rw_type == BWI_REGWIN_T_BUSPCIE) {
 885                         if (BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
 886                                 device_printf(sc->sc_dev,
 887                                               "bus regwin already exists\n");
 888                         } else {
 889                                 BWI_CREATE_REGWIN(&sc->sc_bus_regwin, i,
 890                                                   rw_type, rw_rev);
 891                         }
 892                 } else if (rw_type == BWI_REGWIN_T_MAC) {
 893                         /* XXX ignore return value */
 894                         bwi_mac_attach(sc, i, rw_rev);
 895                 }
 896         }
 897
 898         /* At least one MAC shold exist */
 899         if (!BWI_REGWIN_EXIST(&sc->sc_mac[0].mac_regwin)) {
 900                 device_printf(sc->sc_dev, "no MAC was found\n");
 901                 return ENXIO;
 902         }
 903         KASSERT(sc->sc_nmac > 0, ("no mac's"));
 904
 905         /* Bus regwin must exist */
 906         if (!BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
 907                 device_printf(sc->sc_dev, "no bus regwin was found\n");
 908                 return ENXIO;
 909         }
 910
 911         /* Start with first MAC */
 912         error = bwi_regwin_switch(sc, &sc->sc_mac[0].mac_regwin, NULL);
 913         if (error)
 914                 return error;
 915
 916         return 0;
 917 #undef N
 918 }
 919
 920 int
 921 bwi_bus_init(struct bwi_softc *sc, struct bwi_mac *mac)
 922 {
 923         struct bwi_regwin *old, *bus;
 924         uint32_t val;
 925         int error;
 926
 927         bus = &sc->sc_bus_regwin;
 928         KASSERT(sc->sc_cur_regwin == &mac->mac_regwin, ("not cur regwin"));
 929
 930         /*
 931          * Tell bus to generate requested interrupts
 932          */
 933         if (bus->rw_rev < 6 && bus->rw_type == BWI_REGWIN_T_BUSPCI) {
 934                 /*
 935                  * NOTE: Read BWI_FLAGS from MAC regwin
 936                  */
 937                 val = CSR_READ_4(sc, BWI_FLAGS);
 938
 939                 error = bwi_regwin_switch(sc, bus, &old);
 940                 if (error)
 941                         return error;
 942
 943                 CSR_SETBITS_4(sc, BWI_INTRVEC, (val & BWI_FLAGS_INTR_MASK));
 944         } else {
 945                 uint32_t mac_mask;
 946
 947                 mac_mask = 1 << mac->mac_id;
 948
 949                 error = bwi_regwin_switch(sc, bus, &old);
 950                 if (error)
 951                         return error;
 952
 953                 val = pci_read_config(sc->sc_dev, BWI_PCIR_INTCTL, 4);
 954                 val |= mac_mask << 8;
 955                 pci_write_config(sc->sc_dev, BWI_PCIR_INTCTL, val, 4);
 956         }
 957
 958         if (sc->sc_flags & BWI_F_BUS_INITED)
 959                 goto back;
 960
 961         if (bus->rw_type == BWI_REGWIN_T_BUSPCI) {
 962                 /*
 963                  * Enable prefetch and burst
 964                  */
 965                 CSR_SETBITS_4(sc, BWI_BUS_CONFIG,
 966                               BWI_BUS_CONFIG_PREFETCH | BWI_BUS_CONFIG_BURST);
 967
 968                 if (bus->rw_rev < 5) {
 969                         struct bwi_regwin *com = &sc->sc_com_regwin;
 970
 971                         /*
 972                          * Configure timeouts for bus operation
 973                          */
 974
 975                         /*
 976                          * Set service timeout and request timeout
 977                          */
 978                         CSR_SETBITS_4(sc, BWI_CONF_LO,
 979                         __SHIFTIN(BWI_CONF_LO_SERVTO, BWI_CONF_LO_SERVTO_MASK) |
 980                         __SHIFTIN(BWI_CONF_LO_REQTO, BWI_CONF_LO_REQTO_MASK));
 981
 982                         /*
 983                          * If there is common regwin, we switch to that regwin
 984                          * and switch back to bus regwin once we have done.
 985                          */
 986                         if (BWI_REGWIN_EXIST(com)) {
 987                                 error = bwi_regwin_switch(sc, com, NULL);
 988                                 if (error)
 989                                         return error;
 990                         }
 991
 992                         /* Let bus know what we have changed */
 993                         CSR_WRITE_4(sc, BWI_BUS_ADDR, BWI_BUS_ADDR_MAGIC);
 994                         CSR_READ_4(sc, BWI_BUS_ADDR); /* Flush */
 995                         CSR_WRITE_4(sc, BWI_BUS_DATA, 0);
 996                         CSR_READ_4(sc, BWI_BUS_DATA); /* Flush */
 997
 998                         if (BWI_REGWIN_EXIST(com)) {
 999                                 error = bwi_regwin_switch(sc, bus, NULL);
1000                                 if (error)
1001                                         return error;
1002                         }
1003                 } else if (bus->rw_rev >= 11) {
1004                         /*
1005                          * Enable memory read multiple
1006                          */
1007                         CSR_SETBITS_4(sc, BWI_BUS_CONFIG, BWI_BUS_CONFIG_MRM);
1008                 }
1009         } else {
1010                 /* TODO:PCIE */
1011         }
1012
1013         sc->sc_flags |= BWI_F_BUS_INITED;
1014 back:
1015         return bwi_regwin_switch(sc, old, NULL);
1016 }
1017
1018 static void
1019 bwi_get_card_flags(struct bwi_softc *sc)
1020 {
1021 #define PCI_VENDOR_APPLE 0x106b
1022 #define PCI_VENDOR_DELL  0x1028
1023         sc->sc_card_flags = bwi_read_sprom(sc, BWI_SPROM_CARD_FLAGS);
1024         if (sc->sc_card_flags == 0xffff)
1025                 sc->sc_card_flags = 0;
1026
1027         if (sc->sc_pci_subvid == PCI_VENDOR_DELL &&
1028             sc->sc_bbp_id == BWI_BBPID_BCM4301 &&
1029             sc->sc_pci_revid == 0x74)
1030                 sc->sc_card_flags |= BWI_CARD_F_BT_COEXIST;
1031
1032         if (sc->sc_pci_subvid == PCI_VENDOR_APPLE &&
1033             sc->sc_pci_subdid == 0x4e && /* XXX */
1034             sc->sc_pci_revid > 0x40)
1035                 sc->sc_card_flags |= BWI_CARD_F_PA_GPIO9;
1036
1037         DPRINTF(sc, BWI_DBG_ATTACH, "card flags 0x%04x\n", sc->sc_card_flags);
1038 #undef PCI_VENDOR_DELL
1039 #undef PCI_VENDOR_APPLE
1040 }
1041
1042 static void
1043 bwi_get_eaddr(struct bwi_softc *sc, uint16_t eaddr_ofs, uint8_t *eaddr)
1044 {
1045         int i;
1046
1047         for (i = 0; i < 3; ++i) {
1048                 *((uint16_t *)eaddr + i) =
1049                         htobe16(bwi_read_sprom(sc, eaddr_ofs + 2 * i));
1050         }
1051 }
1052
1053 static void
1054 bwi_get_clock_freq(struct bwi_softc *sc, struct bwi_clock_freq *freq)
1055 {
1056         struct bwi_regwin *com;
1057         uint32_t val;
1058         u_int div;
1059         int src;
1060
1061         bzero(freq, sizeof(*freq));
1062         com = &sc->sc_com_regwin;
1063
1064         KASSERT(BWI_REGWIN_EXIST(com), ("regwin does not exist"));
1065         KASSERT(sc->sc_cur_regwin == com, ("wrong regwin"));
1066         KASSERT(sc->sc_cap & BWI_CAP_CLKMODE, ("wrong clock mode"));
1067
1068         /*
1069          * Calculate clock frequency
1070          */
1071         src = -1;
1072         div = 0;
1073         if (com->rw_rev < 6) {
1074                 val = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
1075                 if (val & BWI_PCIM_GPIO_OUT_CLKSRC) {
1076                         src = BWI_CLKSRC_PCI;
1077                         div = 64;
1078                 } else {
1079                         src = BWI_CLKSRC_CS_OSC;
1080                         div = 32;
1081                 }
1082         } else if (com->rw_rev < 10) {
1083                 val = CSR_READ_4(sc, BWI_CLOCK_CTRL);
1084
1085                 src = __SHIFTOUT(val, BWI_CLOCK_CTRL_CLKSRC);
1086                 if (src == BWI_CLKSRC_LP_OSC) {
1087                         div = 1;
1088                 } else {
1089                         div = (__SHIFTOUT(val, BWI_CLOCK_CTRL_FDIV) + 1) << 2;
1090
1091                         /* Unknown source */
1092                         if (src >= BWI_CLKSRC_MAX)
1093                                 src = BWI_CLKSRC_CS_OSC;
1094                 }
1095         } else {
1096                 val = CSR_READ_4(sc, BWI_CLOCK_INFO);
1097
1098                 src = BWI_CLKSRC_CS_OSC;
1099                 div = (__SHIFTOUT(val, BWI_CLOCK_INFO_FDIV) + 1) << 2;
1100         }
1101
1102         KASSERT(src >= 0 && src < BWI_CLKSRC_MAX, ("bad src %d", src));
1103         KASSERT(div != 0, ("div zero"));
1104
1105         DPRINTF(sc, BWI_DBG_ATTACH, "clksrc %s\n",
1106                 src == BWI_CLKSRC_PCI ? "PCI" :
1107                 (src == BWI_CLKSRC_LP_OSC ? "LP_OSC" : "CS_OSC"));
1108
1109         freq->clkfreq_min = bwi_clkfreq[src].freq_min / div;
1110         freq->clkfreq_max = bwi_clkfreq[src].freq_max / div;
1111
1112         DPRINTF(sc, BWI_DBG_ATTACH, "clkfreq min %u, max %u\n",
1113                 freq->clkfreq_min, freq->clkfreq_max);
1114 }
1115
1116 static int
1117 bwi_set_clock_mode(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
1118 {
1119         struct bwi_regwin *old, *com;
1120         uint32_t clk_ctrl, clk_src;
1121         int error, pwr_off = 0;
1122
1123         com = &sc->sc_com_regwin;
1124         if (!BWI_REGWIN_EXIST(com))
1125                 return 0;
1126
1127         if (com->rw_rev >= 10 || com->rw_rev < 6)
1128                 return 0;
1129
1130         /*
1131          * For common regwin whose rev is [6, 10), the chip
1132          * must be capable to change clock mode.
1133          */
1134         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
1135                 return 0;
1136
1137         error = bwi_regwin_switch(sc, com, &old);
1138         if (error)
1139                 return error;
1140
1141         if (clk_mode == BWI_CLOCK_MODE_FAST)
1142                 bwi_power_on(sc, 0);    /* Don't turn on PLL */
1143
1144         clk_ctrl = CSR_READ_4(sc, BWI_CLOCK_CTRL);
1145         clk_src = __SHIFTOUT(clk_ctrl, BWI_CLOCK_CTRL_CLKSRC);
1146
1147         switch (clk_mode) {
1148         case BWI_CLOCK_MODE_FAST:
1149                 clk_ctrl &= ~BWI_CLOCK_CTRL_SLOW;
1150                 clk_ctrl |= BWI_CLOCK_CTRL_IGNPLL;
1151                 break;
1152         case BWI_CLOCK_MODE_SLOW:
1153                 clk_ctrl |= BWI_CLOCK_CTRL_SLOW;
1154                 break;
1155         case BWI_CLOCK_MODE_DYN:
1156                 clk_ctrl &= ~(BWI_CLOCK_CTRL_SLOW |
1157                               BWI_CLOCK_CTRL_IGNPLL |
1158                               BWI_CLOCK_CTRL_NODYN);
1159                 if (clk_src != BWI_CLKSRC_CS_OSC) {
1160                         clk_ctrl |= BWI_CLOCK_CTRL_NODYN;
1161                         pwr_off = 1;
1162                 }
1163                 break;
1164         }
1165         CSR_WRITE_4(sc, BWI_CLOCK_CTRL, clk_ctrl);
1166
1167         if (pwr_off)
1168                 bwi_power_off(sc, 0);   /* Leave PLL as it is */
1169
1170         return bwi_regwin_switch(sc, old, NULL);
1171 }
1172
1173 static int
1174 bwi_set_clock_delay(struct bwi_softc *sc)
1175 {
1176         struct bwi_regwin *old, *com;
1177         int error;
1178
1179         com = &sc->sc_com_regwin;
1180         if (!BWI_REGWIN_EXIST(com))
1181                 return 0;
1182
1183         error = bwi_regwin_switch(sc, com, &old);
1184         if (error)
1185                 return error;
1186
1187         if (sc->sc_bbp_id == BWI_BBPID_BCM4321) {
1188                 if (sc->sc_bbp_rev == 0)
1189                         CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC0);
1190                 else if (sc->sc_bbp_rev == 1)
1191                         CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC1);
1192         }
1193
1194         if (sc->sc_cap & BWI_CAP_CLKMODE) {
1195                 if (com->rw_rev >= 10) {
1196                         CSR_FILT_SETBITS_4(sc, BWI_CLOCK_INFO, 0xffff, 0x40000);
1197                 } else {
1198                         struct bwi_clock_freq freq;
1199
1200                         bwi_get_clock_freq(sc, &freq);
1201                         CSR_WRITE_4(sc, BWI_PLL_ON_DELAY,
1202                                 howmany(freq.clkfreq_max * 150, 1000000));
1203                         CSR_WRITE_4(sc, BWI_FREQ_SEL_DELAY,
1204                                 howmany(freq.clkfreq_max * 15, 1000000));
1205                 }
1206         }
1207
1208         return bwi_regwin_switch(sc, old, NULL);
1209 }
1210
1211 static void
1212 bwi_init(void *xsc)
1213 {
1214         struct bwi_softc *sc = xsc;
1215         struct ifnet *ifp = sc->sc_ifp;
1216         struct ieee80211com *ic = ifp->if_l2com;
1217
1218         BWI_LOCK(sc);
1219         bwi_init_statechg(sc, 1);
1220         BWI_UNLOCK(sc);
1221
1222         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1223                 ieee80211_start_all(ic);                /* start all vap's */
1224 }
1225
1226 static void
1227 bwi_init_statechg(struct bwi_softc *sc, int statechg)
1228 {
1229         struct ifnet *ifp = sc->sc_ifp;
1230         struct bwi_mac *mac;
1231         int error;
1232
1233         bwi_stop_locked(sc, statechg);
1234
1235         bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
1236
1237         /* TODO: 2 MAC */
1238
1239         mac = &sc->sc_mac[0];
1240         error = bwi_regwin_switch(sc, &mac->mac_regwin, NULL);
1241         if (error) {
1242                 if_printf(ifp, "%s: error %d on regwin switch\n",
1243                     __func__, error);
1244                 goto bad;
1245         }
1246         error = bwi_mac_init(mac);
1247         if (error) {
1248                 if_printf(ifp, "%s: error %d on MAC init\n", __func__, error);
1249                 goto bad;
1250         }
1251
1252         bwi_bbp_power_on(sc, BWI_CLOCK_MODE_DYN);
1253
1254         bwi_set_bssid(sc, bwi_zero_addr);       /* Clear BSSID */
1255         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_MYADDR, IF_LLADDR(ifp));
1256
1257         bwi_mac_reset_hwkeys(mac);
1258
1259         if ((mac->mac_flags & BWI_MAC_F_HAS_TXSTATS) == 0) {
1260                 int i;
1261
1262 #define NRETRY  1000
1263                 /*
1264                  * Drain any possible pending TX status
1265                  */
1266                 for (i = 0; i < NRETRY; ++i) {
1267                         if ((CSR_READ_4(sc, BWI_TXSTATUS0) &
1268                              BWI_TXSTATUS0_VALID) == 0)
1269                                 break;
1270                         CSR_READ_4(sc, BWI_TXSTATUS1);
1271                 }
1272                 if (i == NRETRY)
1273                         if_printf(ifp, "%s: can't drain TX status\n", __func__);
1274 #undef NRETRY
1275         }
1276
1277         if (mac->mac_phy.phy_mode == IEEE80211_MODE_11G)
1278                 bwi_mac_updateslot(mac, 1);
1279
1280         /* Start MAC */
1281         error = bwi_mac_start(mac);
1282         if (error) {
1283                 if_printf(ifp, "%s: error %d starting MAC\n", __func__, error);
1284                 goto bad;
1285         }
1286
1287         /* Clear stop flag before enabling interrupt */
1288         sc->sc_flags &= ~BWI_F_STOP;
1289
1290         ifp->if_drv_flags |= IFF_DRV_RUNNING;
1291
1292         /* Enable intrs */
1293         bwi_enable_intrs(sc, BWI_INIT_INTRS);
1294         return;
1295 bad:
1296         bwi_stop_locked(sc, 1);
1297 }
1298
1299 static int
1300 bwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1301 {
1302 #define IS_RUNNING(ifp) \
1303         ((ifp->if_flags & IFF_UP) && (ifp->if_drv_flags & IFF_DRV_RUNNING))
1304         struct bwi_softc *sc = ifp->if_softc;
1305         struct ieee80211com *ic = ifp->if_l2com;
1306         struct ifreq *ifr = (struct ifreq *) data;
1307         int error = 0, startall = 0;
1308
1309         switch (cmd) {
1310         case SIOCSIFFLAGS:
1311                 BWI_LOCK(sc);
1312                 if (IS_RUNNING(ifp)) {
1313                         struct bwi_mac *mac;
1314                         int promisc = -1;
1315
1316                         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1317                             ("current regwin type %d",
1318                             sc->sc_cur_regwin->rw_type));
1319                         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1320
1321                         if ((ifp->if_flags & IFF_PROMISC) &&
1322                             (sc->sc_flags & BWI_F_PROMISC) == 0) {
1323                                 promisc = 1;
1324                                 sc->sc_flags |= BWI_F_PROMISC;
1325                         } else if ((ifp->if_flags & IFF_PROMISC) == 0 &&
1326                                    (sc->sc_flags & BWI_F_PROMISC)) {
1327                                 promisc = 0;
1328                                 sc->sc_flags &= ~BWI_F_PROMISC;
1329                         }
1330
1331                         if (promisc >= 0)
1332                                 bwi_mac_set_promisc(mac, promisc);
1333                 }
1334
1335                 if (ifp->if_flags & IFF_UP) {
1336                         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1337                                 bwi_init_statechg(sc, 1);
1338                                 startall = 1;
1339                         }
1340                 } else {
1341                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1342                                 bwi_stop_locked(sc, 1);
1343                 }
1344                 BWI_UNLOCK(sc);
1345                 if (startall)
1346                         ieee80211_start_all(ic);
1347                 break;
1348         case SIOCGIFMEDIA:
1349                 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
1350                 break;
1351         case SIOCGIFADDR:
1352                 error = ether_ioctl(ifp, cmd, data);
1353                 break;
1354         default:
1355                 error = EINVAL;
1356                 break;
1357         }
1358         return error;
1359 #undef IS_RUNNING
1360 }
1361
1362 static void
1363 bwi_start(struct ifnet *ifp)
1364 {
1365         struct bwi_softc *sc = ifp->if_softc;
1366
1367         BWI_LOCK(sc);
1368         bwi_start_locked(ifp);
1369         BWI_UNLOCK(sc);
1370 }
1371
1372 static void
1373 bwi_start_locked(struct ifnet *ifp)
1374 {
1375         struct bwi_softc *sc = ifp->if_softc;
1376         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
1377         struct ieee80211_frame *wh;
1378         struct ieee80211_node *ni;
1379         struct ieee80211_key *k;
1380         struct mbuf *m;
1381         int trans, idx;
1382
1383         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
1384                 return;
1385
1386         trans = 0;
1387         idx = tbd->tbd_idx;
1388
1389         while (tbd->tbd_buf[idx].tb_mbuf == NULL) {
1390                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);       /* XXX: LOCK */
1391                 if (m == NULL)
1392                         break;
1393
1394                 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1395                 wh = mtod(m, struct ieee80211_frame *);
1396                 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1397                         k = ieee80211_crypto_encap(ni, m);
1398                         if (k == NULL) {
1399                                 ieee80211_free_node(ni);
1400                                 m_freem(m);
1401                                 ifp->if_oerrors++;
1402                                 continue;
1403                         }
1404                 }
1405                 wh = NULL;      /* Catch any invalid use */
1406
1407                 if (bwi_encap(sc, idx, m, ni) != 0) {
1408                         /* 'm' is freed in bwi_encap() if we reach here */
1409                         if (ni != NULL)
1410                                 ieee80211_free_node(ni);
1411                         ifp->if_oerrors++;
1412                         continue;
1413                 }
1414
1415                 trans = 1;
1416                 tbd->tbd_used++;
1417                 idx = (idx + 1) % BWI_TX_NDESC;
1418
1419                 ifp->if_opackets++;
1420
1421                 if (tbd->tbd_used + BWI_TX_NSPRDESC >= BWI_TX_NDESC) {
1422                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1423                         break;
1424                 }
1425         }
1426         tbd->tbd_idx = idx;
1427
1428         if (trans)
1429                 ifp->if_timer = 5;
1430 }
1431
1432 static int
1433 bwi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1434         const struct ieee80211_bpf_params *params)
1435 {
1436         struct ieee80211com *ic = ni->ni_ic;
1437         struct ifnet *ifp = ic->ic_ifp;
1438         struct bwi_softc *sc = ifp->if_softc;
1439         /* XXX wme? */
1440         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
1441         int idx, error;
1442
1443         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1444                 ieee80211_free_node(ni);
1445                 m_freem(m);
1446                 return ENETDOWN;
1447         }
1448
1449         BWI_LOCK(sc);
1450         idx = tbd->tbd_idx;
1451         KASSERT(tbd->tbd_buf[idx].tb_mbuf == NULL, ("slot %d not empty", idx));
1452         if (params == NULL) {
1453                 /*
1454                  * Legacy path; interpret frame contents to decide
1455                  * precisely how to send the frame.
1456                  */
1457                 error = bwi_encap(sc, idx, m, ni);
1458         } else {
1459                 /*
1460                  * Caller supplied explicit parameters to use in
1461                  * sending the frame.
1462                  */
1463                 error = bwi_encap_raw(sc, idx, m, ni, params);
1464         }
1465         if (error == 0) {
1466                 ifp->if_opackets++;
1467                 if (++tbd->tbd_used + BWI_TX_NSPRDESC >= BWI_TX_NDESC)
1468                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1469                 tbd->tbd_idx = (idx + 1) % BWI_TX_NDESC;
1470                 ifp->if_timer = 5;
1471         } else {
1472                 /* NB: m is reclaimed on encap failure */
1473                 ieee80211_free_node(ni);
1474                 ifp->if_oerrors++;
1475         }
1476         BWI_UNLOCK(sc);
1477         return error;
1478 }
1479
1480 static void
1481 bwi_watchdog(struct ifnet *ifp)
1482 {
1483         struct bwi_softc *sc = ifp->if_softc;
1484
1485         BWI_LOCK(sc);
1486         if ((ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1487                 if_printf(ifp, "watchdog timeout\n");
1488                 ifp->if_oerrors++;
1489                 taskqueue_enqueue(sc->sc_tq, &sc->sc_restart_task);
1490         }
1491         BWI_UNLOCK(sc);
1492 }
1493
1494 static void
1495 bwi_stop(struct bwi_softc *sc, int statechg)
1496 {
1497         BWI_LOCK(sc);
1498         bwi_stop_locked(sc, statechg);
1499         BWI_UNLOCK(sc);
1500 }
1501
1502 static void
1503 bwi_stop_locked(struct bwi_softc *sc, int statechg)
1504 {
1505         struct ifnet *ifp = sc->sc_ifp;
1506         struct bwi_mac *mac;
1507         int i, error, pwr_off = 0;
1508
1509         BWI_ASSERT_LOCKED(sc);
1510
1511         callout_stop(&sc->sc_calib_ch);
1512         callout_stop(&sc->sc_led_blink_ch);
1513         sc->sc_led_blinking = 0;
1514         sc->sc_flags |= BWI_F_STOP;
1515
1516         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1517                 KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1518                     ("current regwin type %d", sc->sc_cur_regwin->rw_type));
1519                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
1520
1521                 bwi_disable_intrs(sc, BWI_ALL_INTRS);
1522                 CSR_READ_4(sc, BWI_MAC_INTR_MASK);
1523                 bwi_mac_stop(mac);
1524         }
1525
1526         for (i = 0; i < sc->sc_nmac; ++i) {
1527                 struct bwi_regwin *old_rw;
1528
1529                 mac = &sc->sc_mac[i];
1530                 if ((mac->mac_flags & BWI_MAC_F_INITED) == 0)
1531                         continue;
1532
1533                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old_rw);
1534                 if (error)
1535                         continue;
1536
1537                 bwi_mac_shutdown(mac);
1538                 pwr_off = 1;
1539
1540                 bwi_regwin_switch(sc, old_rw, NULL);
1541         }
1542
1543         if (pwr_off)
1544                 bwi_bbp_power_off(sc);
1545
1546         sc->sc_tx_timer = 0;
1547         ifp->if_timer = 0;
1548         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
1549 }
1550
1551 void
1552 bwi_intr(void *xsc)
1553 {
1554         struct bwi_softc *sc = xsc;
1555         struct ifnet *ifp = sc->sc_ifp;
1556         struct bwi_mac *mac;
1557         uint32_t intr_status;
1558         uint32_t txrx_intr_status[BWI_TXRX_NRING];
1559         int i, txrx_error, tx = 0, rx_data = -1;
1560
1561         BWI_LOCK(sc);
1562
1563         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 ||
1564             (sc->sc_flags & BWI_F_STOP)) {
1565                 BWI_UNLOCK(sc);
1566                 return;
1567         }
1568         /*
1569          * Get interrupt status
1570          */
1571         intr_status = CSR_READ_4(sc, BWI_MAC_INTR_STATUS);
1572         if (intr_status == 0xffffffff) {        /* Not for us */
1573                 BWI_UNLOCK(sc);
1574                 return;
1575         }
1576
1577         DPRINTF(sc, BWI_DBG_INTR, "intr status 0x%08x\n", intr_status);
1578
1579         intr_status &= CSR_READ_4(sc, BWI_MAC_INTR_MASK);
1580         if (intr_status == 0) {         /* Nothing is interesting */
1581                 BWI_UNLOCK(sc);
1582                 return;
1583         }
1584
1585         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1586             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
1587         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1588
1589         txrx_error = 0;
1590         DPRINTF(sc, BWI_DBG_INTR, "%s\n", "TX/RX intr");
1591         for (i = 0; i < BWI_TXRX_NRING; ++i) {
1592                 uint32_t mask;
1593
1594                 if (BWI_TXRX_IS_RX(i))
1595                         mask = BWI_TXRX_RX_INTRS;
1596                 else
1597                         mask = BWI_TXRX_TX_INTRS;
1598
1599                 txrx_intr_status[i] =
1600                 CSR_READ_4(sc, BWI_TXRX_INTR_STATUS(i)) & mask;
1601
1602                 _DPRINTF(sc, BWI_DBG_INTR, ", %d 0x%08x",
1603                          i, txrx_intr_status[i]);
1604
1605                 if (txrx_intr_status[i] & BWI_TXRX_INTR_ERROR) {
1606                         if_printf(ifp,
1607                             "%s: intr fatal TX/RX (%d) error 0x%08x\n",
1608                             __func__, i, txrx_intr_status[i]);
1609                         txrx_error = 1;
1610                 }
1611         }
1612         _DPRINTF(sc, BWI_DBG_INTR, "%s\n", "");
1613
1614         /*
1615          * Acknowledge interrupt
1616          */
1617         CSR_WRITE_4(sc, BWI_MAC_INTR_STATUS, intr_status);
1618
1619         for (i = 0; i < BWI_TXRX_NRING; ++i)
1620                 CSR_WRITE_4(sc, BWI_TXRX_INTR_STATUS(i), txrx_intr_status[i]);
1621
1622         /* Disable all interrupts */
1623         bwi_disable_intrs(sc, BWI_ALL_INTRS);
1624
1625         /*
1626          * http://bcm-specs.sipsolutions.net/Interrupts
1627          * Says for this bit (0x800):
1628          * "Fatal Error
1629          *
1630          * We got this one while testing things when by accident the
1631          * template ram wasn't set to big endian when it should have
1632          * been after writing the initial values. It keeps on being
1633          * triggered, the only way to stop it seems to shut down the
1634          * chip."
1635          *
1636          * Suggesting that we should never get it and if we do we're not
1637          * feeding TX packets into the MAC correctly if we do...  Apparently,
1638          * it is valid only on mac version 5 and higher, but I couldn't
1639          * find a reference for that...  Since I see them from time to time
1640          * on my card, this suggests an error in the tx path still...
1641          */
1642         if (intr_status & BWI_INTR_PHY_TXERR) {
1643                 if (mac->mac_flags & BWI_MAC_F_PHYE_RESET) {
1644                         if_printf(ifp, "%s: intr PHY TX error\n", __func__);
1645                         taskqueue_enqueue(sc->sc_tq, &sc->sc_restart_task);
1646                         BWI_UNLOCK(sc);
1647                         return;
1648                 }
1649         }
1650
1651         if (txrx_error) {
1652                 /* TODO: reset device */
1653         }
1654
1655         if (intr_status & BWI_INTR_TBTT)
1656                 bwi_mac_config_ps(mac);
1657
1658         if (intr_status & BWI_INTR_EO_ATIM)
1659                 if_printf(ifp, "EO_ATIM\n");
1660
1661         if (intr_status & BWI_INTR_PMQ) {
1662                 for (;;) {
1663                         if ((CSR_READ_4(sc, BWI_MAC_PS_STATUS) & 0x8) == 0)
1664                                 break;
1665                 }
1666                 CSR_WRITE_2(sc, BWI_MAC_PS_STATUS, 0x2);
1667         }
1668
1669         if (intr_status & BWI_INTR_NOISE)
1670                 if_printf(ifp, "intr noise\n");
1671
1672         if (txrx_intr_status[0] & BWI_TXRX_INTR_RX) {
1673                 rx_data = sc->sc_rxeof(sc);
1674                 if (sc->sc_flags & BWI_F_STOP) {
1675                         BWI_UNLOCK(sc);
1676                         return;
1677                 }
1678         }
1679
1680         if (txrx_intr_status[3] & BWI_TXRX_INTR_RX) {
1681                 sc->sc_txeof_status(sc);
1682                 tx = 1;
1683         }
1684
1685         if (intr_status & BWI_INTR_TX_DONE) {
1686                 bwi_txeof(sc);
1687                 tx = 1;
1688         }
1689
1690         /* Re-enable interrupts */
1691         bwi_enable_intrs(sc, BWI_INIT_INTRS);
1692
1693         if (sc->sc_blink_led != NULL && sc->sc_led_blink) {
1694                 int evt = BWI_LED_EVENT_NONE;
1695
1696                 if (tx && rx_data > 0) {
1697                         if (sc->sc_rx_rate > sc->sc_tx_rate)
1698                                 evt = BWI_LED_EVENT_RX;
1699                         else
1700                                 evt = BWI_LED_EVENT_TX;
1701                 } else if (tx) {
1702                         evt = BWI_LED_EVENT_TX;
1703                 } else if (rx_data > 0) {
1704                         evt = BWI_LED_EVENT_RX;
1705                 } else if (rx_data == 0) {
1706                         evt = BWI_LED_EVENT_POLL;
1707                 }
1708
1709                 if (evt != BWI_LED_EVENT_NONE)
1710                         bwi_led_event(sc, evt);
1711         }
1712
1713         BWI_UNLOCK(sc);
1714 }
1715
1716 static void
1717 bwi_scan_start(struct ieee80211com *ic)
1718 {
1719         struct bwi_softc *sc = ic->ic_ifp->if_softc;
1720
1721         BWI_LOCK(sc);
1722         /* Enable MAC beacon promiscuity */
1723         CSR_SETBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_PASS_BCN);
1724         BWI_UNLOCK(sc);
1725 }
1726
1727 static void
1728 bwi_set_channel(struct ieee80211com *ic)
1729 {
1730         struct bwi_softc *sc = ic->ic_ifp->if_softc;
1731         struct ieee80211_channel *c = ic->ic_curchan;
1732         struct bwi_mac *mac;
1733
1734         BWI_LOCK(sc);
1735         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1736             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
1737         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1738         bwi_rf_set_chan(mac, ieee80211_chan2ieee(ic, c), 0);
1739
1740         sc->sc_rates = ieee80211_get_ratetable(c);
1741
1742         /*
1743          * Setup radio tap channel freq and flags
1744          */
1745         sc->sc_tx_th.wt_chan_freq = sc->sc_rx_th.wr_chan_freq =
1746                 htole16(c->ic_freq);
1747         sc->sc_tx_th.wt_chan_flags = sc->sc_rx_th.wr_chan_flags =
1748                 htole16(c->ic_flags & 0xffff);
1749
1750         BWI_UNLOCK(sc);
1751 }
1752
1753 static void
1754 bwi_scan_end(struct ieee80211com *ic)
1755 {
1756         struct bwi_softc *sc = ic->ic_ifp->if_softc;
1757
1758         BWI_LOCK(sc);
1759         CSR_CLRBITS_4(sc, BWI_MAC_STATUS, BWI_MAC_STATUS_PASS_BCN);
1760         BWI_UNLOCK(sc);
1761 }
1762
1763 static int
1764 bwi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1765 {
1766         struct bwi_vap *bvp = BWI_VAP(vap);
1767         struct ieee80211com *ic= vap->iv_ic;
1768         struct ifnet *ifp = ic->ic_ifp;
1769         enum ieee80211_state ostate = vap->iv_state;
1770         struct bwi_softc *sc = ifp->if_softc;
1771         struct bwi_mac *mac;
1772         int error;
1773
1774         BWI_LOCK(sc);
1775
1776         callout_stop(&sc->sc_calib_ch);
1777
1778         if (nstate == IEEE80211_S_INIT)
1779                 sc->sc_txpwrcb_type = BWI_TXPWR_INIT;
1780
1781         bwi_led_newstate(sc, nstate);
1782
1783         error = bvp->bv_newstate(vap, nstate, arg);
1784         if (error != 0)
1785                 goto back;
1786
1787         /*
1788          * Clear the BSSID when we stop a STA
1789          */
1790         if (vap->iv_opmode == IEEE80211_M_STA) {
1791                 if (ostate == IEEE80211_S_RUN && nstate != IEEE80211_S_RUN) {
1792                         /*
1793                          * Clear out the BSSID.  If we reassociate to
1794                          * the same AP, this will reinialize things
1795                          * correctly...
1796                          */
1797                         if (ic->ic_opmode == IEEE80211_M_STA &&
1798                             !(sc->sc_flags & BWI_F_STOP))
1799                                 bwi_set_bssid(sc, bwi_zero_addr);
1800                 }
1801         }
1802
1803         if (vap->iv_opmode == IEEE80211_M_MONITOR) {
1804                 /* Nothing to do */
1805         } else if (nstate == IEEE80211_S_RUN) {
1806                 bwi_set_bssid(sc, vap->iv_bss->ni_bssid);
1807
1808                 KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
1809                     ("current regwin type %d", sc->sc_cur_regwin->rw_type));
1810                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
1811
1812                 /* Initial TX power calibration */
1813                 bwi_mac_calibrate_txpower(mac, BWI_TXPWR_INIT);
1814 #ifdef notyet
1815                 sc->sc_txpwrcb_type = BWI_TXPWR_FORCE;
1816 #else
1817                 sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
1818 #endif
1819
1820                 callout_reset(&sc->sc_calib_ch, hz, bwi_calibrate, sc);
1821         }
1822 back:
1823         BWI_UNLOCK(sc);
1824
1825         return error;
1826 }
1827
1828 static int
1829 bwi_media_change(struct ifnet *ifp)
1830 {
1831         int error = ieee80211_media_change(ifp);
1832         /* NB: only the fixed rate can change and that doesn't need a reset */
1833         return (error == ENETRESET ? 0 : error);
1834 }
1835
1836 static int
1837 bwi_dma_alloc(struct bwi_softc *sc)
1838 {
1839         int error, i, has_txstats;
1840         bus_addr_t lowaddr = 0;
1841         bus_size_t tx_ring_sz, rx_ring_sz, desc_sz = 0;
1842         uint32_t txrx_ctrl_step = 0;
1843
1844         has_txstats = 0;
1845         for (i = 0; i < sc->sc_nmac; ++i) {
1846                 if (sc->sc_mac[i].mac_flags & BWI_MAC_F_HAS_TXSTATS) {
1847                         has_txstats = 1;
1848                         break;
1849                 }
1850         }
1851
1852         switch (sc->sc_bus_space) {
1853         case BWI_BUS_SPACE_30BIT:
1854         case BWI_BUS_SPACE_32BIT:
1855                 if (sc->sc_bus_space == BWI_BUS_SPACE_30BIT)
1856                         lowaddr = BWI_BUS_SPACE_MAXADDR;
1857                 else
1858                         lowaddr = BUS_SPACE_MAXADDR_32BIT;
1859                 desc_sz = sizeof(struct bwi_desc32);
1860                 txrx_ctrl_step = 0x20;
1861
1862                 sc->sc_init_tx_ring = bwi_init_tx_ring32;
1863                 sc->sc_free_tx_ring = bwi_free_tx_ring32;
1864                 sc->sc_init_rx_ring = bwi_init_rx_ring32;
1865                 sc->sc_free_rx_ring = bwi_free_rx_ring32;
1866                 sc->sc_setup_rxdesc = bwi_setup_rx_desc32;
1867                 sc->sc_setup_txdesc = bwi_setup_tx_desc32;
1868                 sc->sc_rxeof = bwi_rxeof32;
1869                 sc->sc_start_tx = bwi_start_tx32;
1870                 if (has_txstats) {
1871                         sc->sc_init_txstats = bwi_init_txstats32;
1872                         sc->sc_free_txstats = bwi_free_txstats32;
1873                         sc->sc_txeof_status = bwi_txeof_status32;
1874                 }
1875                 break;
1876
1877         case BWI_BUS_SPACE_64BIT:
1878                 lowaddr = BUS_SPACE_MAXADDR;    /* XXX */
1879                 desc_sz = sizeof(struct bwi_desc64);
1880                 txrx_ctrl_step = 0x40;
1881
1882                 sc->sc_init_tx_ring = bwi_init_tx_ring64;
1883                 sc->sc_free_tx_ring = bwi_free_tx_ring64;
1884                 sc->sc_init_rx_ring = bwi_init_rx_ring64;
1885                 sc->sc_free_rx_ring = bwi_free_rx_ring64;
1886                 sc->sc_setup_rxdesc = bwi_setup_rx_desc64;
1887                 sc->sc_setup_txdesc = bwi_setup_tx_desc64;
1888                 sc->sc_rxeof = bwi_rxeof64;
1889                 sc->sc_start_tx = bwi_start_tx64;
1890                 if (has_txstats) {
1891                         sc->sc_init_txstats = bwi_init_txstats64;
1892                         sc->sc_free_txstats = bwi_free_txstats64;
1893                         sc->sc_txeof_status = bwi_txeof_status64;
1894                 }
1895                 break;
1896         }
1897
1898         KASSERT(lowaddr != 0, ("lowaddr zero"));
1899         KASSERT(desc_sz != 0, ("desc_sz zero"));
1900         KASSERT(txrx_ctrl_step != 0, ("txrx_ctrl_step zero"));
1901
1902         tx_ring_sz = roundup(desc_sz * BWI_TX_NDESC, BWI_RING_ALIGN);
1903         rx_ring_sz = roundup(desc_sz * BWI_RX_NDESC, BWI_RING_ALIGN);
1904
1905         /*
1906          * Create top level DMA tag
1907          */
1908         error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), /* parent */
1909                                BWI_ALIGN, 0,            /* alignment, bounds */
1910                                lowaddr,                 /* lowaddr */
1911                                BUS_SPACE_MAXADDR,       /* highaddr */
1912                                NULL, NULL,              /* filter, filterarg */
1913                                MAXBSIZE,                /* maxsize */
1914                                BUS_SPACE_UNRESTRICTED,  /* nsegments */
1915                                BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
1916                                BUS_DMA_ALLOCNOW,        /* flags */
1917                                NULL, NULL,              /* lockfunc, lockarg */
1918                                &sc->sc_parent_dtag);
1919         if (error) {
1920                 device_printf(sc->sc_dev, "can't create parent DMA tag\n");
1921                 return error;
1922         }
1923
1924 #define TXRX_CTRL(idx)  (BWI_TXRX_CTRL_BASE + (idx) * txrx_ctrl_step)
1925
1926         /*
1927          * Create TX ring DMA stuffs
1928          */
1929         error = bus_dma_tag_create(sc->sc_parent_dtag,
1930                                 BWI_RING_ALIGN, 0,
1931                                 BUS_SPACE_MAXADDR,
1932                                 BUS_SPACE_MAXADDR,
1933                                 NULL, NULL,
1934                                 tx_ring_sz,
1935                                 1,
1936                                 BUS_SPACE_MAXSIZE_32BIT,
1937                                 BUS_DMA_ALLOCNOW,
1938                                 NULL, NULL,
1939                                 &sc->sc_txring_dtag);
1940         if (error) {
1941                 device_printf(sc->sc_dev, "can't create TX ring DMA tag\n");
1942                 return error;
1943         }
1944
1945         for (i = 0; i < BWI_TX_NRING; ++i) {
1946                 error = bwi_dma_ring_alloc(sc, sc->sc_txring_dtag,
1947                                            &sc->sc_tx_rdata[i], tx_ring_sz,
1948                                            TXRX_CTRL(i));
1949                 if (error) {
1950                         device_printf(sc->sc_dev, "%dth TX ring "
1951                                       "DMA alloc failed\n", i);
1952                         return error;
1953                 }
1954         }
1955
1956         /*
1957          * Create RX ring DMA stuffs
1958          */
1959         error = bus_dma_tag_create(sc->sc_parent_dtag,
1960                                 BWI_RING_ALIGN, 0,
1961                                 BUS_SPACE_MAXADDR,
1962                                 BUS_SPACE_MAXADDR,
1963                                 NULL, NULL,
1964                                 rx_ring_sz,
1965                                 1,
1966                                 BUS_SPACE_MAXSIZE_32BIT,
1967                                 BUS_DMA_ALLOCNOW,
1968                                 NULL, NULL,
1969                                 &sc->sc_rxring_dtag);
1970         if (error) {
1971                 device_printf(sc->sc_dev, "can't create RX ring DMA tag\n");
1972                 return error;
1973         }
1974
1975         error = bwi_dma_ring_alloc(sc, sc->sc_rxring_dtag, &sc->sc_rx_rdata,
1976                                    rx_ring_sz, TXRX_CTRL(0));
1977         if (error) {
1978                 device_printf(sc->sc_dev, "RX ring DMA alloc failed\n");
1979                 return error;
1980         }
1981
1982         if (has_txstats) {
1983                 error = bwi_dma_txstats_alloc(sc, TXRX_CTRL(3), desc_sz);
1984                 if (error) {
1985                         device_printf(sc->sc_dev,
1986                                       "TX stats DMA alloc failed\n");
1987                         return error;
1988                 }
1989         }
1990
1991 #undef TXRX_CTRL
1992
1993         return bwi_dma_mbuf_create(sc);
1994 }
1995
1996 static void
1997 bwi_dma_free(struct bwi_softc *sc)
1998 {
1999         if (sc->sc_txring_dtag != NULL) {
2000                 int i;
2001
2002                 for (i = 0; i < BWI_TX_NRING; ++i) {
2003                         struct bwi_ring_data *rd = &sc->sc_tx_rdata[i];
2004
2005                         if (rd->rdata_desc != NULL) {
2006                                 bus_dmamap_unload(sc->sc_txring_dtag,
2007                                                   rd->rdata_dmap);
2008                                 bus_dmamem_free(sc->sc_txring_dtag,
2009                                                 rd->rdata_desc,
2010                                                 rd->rdata_dmap);
2011                         }
2012                 }
2013                 bus_dma_tag_destroy(sc->sc_txring_dtag);
2014         }
2015
2016         if (sc->sc_rxring_dtag != NULL) {
2017                 struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2018
2019                 if (rd->rdata_desc != NULL) {
2020                         bus_dmamap_unload(sc->sc_rxring_dtag, rd->rdata_dmap);
2021                         bus_dmamem_free(sc->sc_rxring_dtag, rd->rdata_desc,
2022                                         rd->rdata_dmap);
2023                 }
2024                 bus_dma_tag_destroy(sc->sc_rxring_dtag);
2025         }
2026
2027         bwi_dma_txstats_free(sc);
2028         bwi_dma_mbuf_destroy(sc, BWI_TX_NRING, 1);
2029
2030         if (sc->sc_parent_dtag != NULL)
2031                 bus_dma_tag_destroy(sc->sc_parent_dtag);
2032 }
2033
2034 static int
2035 bwi_dma_ring_alloc(struct bwi_softc *sc, bus_dma_tag_t dtag,
2036                    struct bwi_ring_data *rd, bus_size_t size,
2037                    uint32_t txrx_ctrl)
2038 {
2039         int error;
2040
2041         error = bus_dmamem_alloc(dtag, &rd->rdata_desc,
2042                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2043                                  &rd->rdata_dmap);
2044         if (error) {
2045                 device_printf(sc->sc_dev, "can't allocate DMA mem\n");
2046                 return error;
2047         }
2048
2049         error = bus_dmamap_load(dtag, rd->rdata_dmap, rd->rdata_desc, size,
2050                                 bwi_dma_ring_addr, &rd->rdata_paddr,
2051                                 BUS_DMA_NOWAIT);
2052         if (error) {
2053                 device_printf(sc->sc_dev, "can't load DMA mem\n");
2054                 bus_dmamem_free(dtag, rd->rdata_desc, rd->rdata_dmap);
2055                 rd->rdata_desc = NULL;
2056                 return error;
2057         }
2058
2059         rd->rdata_txrx_ctrl = txrx_ctrl;
2060         return 0;
2061 }
2062
2063 static int
2064 bwi_dma_txstats_alloc(struct bwi_softc *sc, uint32_t ctrl_base,
2065                       bus_size_t desc_sz)
2066 {
2067         struct bwi_txstats_data *st;
2068         bus_size_t dma_size;
2069         int error;
2070
2071         st = malloc(sizeof(*st), M_DEVBUF, M_NOWAIT | M_ZERO);
2072         if (st == NULL) {
2073                 device_printf(sc->sc_dev, "can't allocate txstats data\n");
2074                 return ENOMEM;
2075         }
2076         sc->sc_txstats = st;
2077
2078         /*
2079          * Create TX stats descriptor DMA stuffs
2080          */
2081         dma_size = roundup(desc_sz * BWI_TXSTATS_NDESC, BWI_RING_ALIGN);
2082
2083         error = bus_dma_tag_create(sc->sc_parent_dtag,
2084                                 BWI_RING_ALIGN,
2085                                 0,
2086                                 BUS_SPACE_MAXADDR,
2087                                 BUS_SPACE_MAXADDR,
2088                                 NULL, NULL,
2089                                 dma_size,
2090                                 1,
2091                                 BUS_SPACE_MAXSIZE_32BIT,
2092                                 BUS_DMA_ALLOCNOW,
2093                                 NULL, NULL,
2094                                 &st->stats_ring_dtag);
2095         if (error) {
2096                 device_printf(sc->sc_dev, "can't create txstats ring "
2097                               "DMA tag\n");
2098                 return error;
2099         }
2100
2101         error = bus_dmamem_alloc(st->stats_ring_dtag, &st->stats_ring,
2102                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2103                                  &st->stats_ring_dmap);
2104         if (error) {
2105                 device_printf(sc->sc_dev, "can't allocate txstats ring "
2106                               "DMA mem\n");
2107                 bus_dma_tag_destroy(st->stats_ring_dtag);
2108                 st->stats_ring_dtag = NULL;
2109                 return error;
2110         }
2111
2112         error = bus_dmamap_load(st->stats_ring_dtag, st->stats_ring_dmap,
2113                                 st->stats_ring, dma_size,
2114                                 bwi_dma_ring_addr, &st->stats_ring_paddr,
2115                                 BUS_DMA_NOWAIT);
2116         if (error) {
2117                 device_printf(sc->sc_dev, "can't load txstats ring DMA mem\n");
2118                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
2119                                 st->stats_ring_dmap);
2120                 bus_dma_tag_destroy(st->stats_ring_dtag);
2121                 st->stats_ring_dtag = NULL;
2122                 return error;
2123         }
2124
2125         /*
2126          * Create TX stats DMA stuffs
2127          */
2128         dma_size = roundup(sizeof(struct bwi_txstats) * BWI_TXSTATS_NDESC,
2129                            BWI_ALIGN);
2130
2131         error = bus_dma_tag_create(sc->sc_parent_dtag,
2132                                 BWI_ALIGN,
2133                                 0,
2134                                 BUS_SPACE_MAXADDR,
2135                                 BUS_SPACE_MAXADDR,
2136                                 NULL, NULL,
2137                                 dma_size,
2138                                 1,
2139                                 BUS_SPACE_MAXSIZE_32BIT,
2140                                 BUS_DMA_ALLOCNOW,
2141                                 NULL, NULL,
2142                                 &st->stats_dtag);
2143         if (error) {
2144                 device_printf(sc->sc_dev, "can't create txstats DMA tag\n");
2145                 return error;
2146         }
2147
2148         error = bus_dmamem_alloc(st->stats_dtag, (void **)&st->stats,
2149                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2150                                  &st->stats_dmap);
2151         if (error) {
2152                 device_printf(sc->sc_dev, "can't allocate txstats DMA mem\n");
2153                 bus_dma_tag_destroy(st->stats_dtag);
2154                 st->stats_dtag = NULL;
2155                 return error;
2156         }
2157
2158         error = bus_dmamap_load(st->stats_dtag, st->stats_dmap, st->stats,
2159                                 dma_size, bwi_dma_ring_addr, &st->stats_paddr,
2160                                 BUS_DMA_NOWAIT);
2161         if (error) {
2162                 device_printf(sc->sc_dev, "can't load txstats DMA mem\n");
2163                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
2164                 bus_dma_tag_destroy(st->stats_dtag);
2165                 st->stats_dtag = NULL;
2166                 return error;
2167         }
2168
2169         st->stats_ctrl_base = ctrl_base;
2170         return 0;
2171 }
2172
2173 static void
2174 bwi_dma_txstats_free(struct bwi_softc *sc)
2175 {
2176         struct bwi_txstats_data *st;
2177
2178         if (sc->sc_txstats == NULL)
2179                 return;
2180         st = sc->sc_txstats;
2181
2182         if (st->stats_ring_dtag != NULL) {
2183                 bus_dmamap_unload(st->stats_ring_dtag, st->stats_ring_dmap);
2184                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
2185                                 st->stats_ring_dmap);
2186                 bus_dma_tag_destroy(st->stats_ring_dtag);
2187         }
2188
2189         if (st->stats_dtag != NULL) {
2190                 bus_dmamap_unload(st->stats_dtag, st->stats_dmap);
2191                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
2192                 bus_dma_tag_destroy(st->stats_dtag);
2193         }
2194
2195         free(st, M_DEVBUF);
2196 }
2197
2198 static void
2199 bwi_dma_ring_addr(void *arg, bus_dma_segment_t *seg, int nseg, int error)
2200 {
2201         KASSERT(nseg == 1, ("too many segments\n"));
2202         *((bus_addr_t *)arg) = seg->ds_addr;
2203 }
2204
2205 static int
2206 bwi_dma_mbuf_create(struct bwi_softc *sc)
2207 {
2208         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2209         int i, j, k, ntx, error;
2210
2211         /*
2212          * Create TX/RX mbuf DMA tag
2213          */
2214         error = bus_dma_tag_create(sc->sc_parent_dtag,
2215                                 1,
2216                                 0,
2217                                 BUS_SPACE_MAXADDR,
2218                                 BUS_SPACE_MAXADDR,
2219                                 NULL, NULL,
2220                                 MCLBYTES,
2221                                 1,
2222                                 BUS_SPACE_MAXSIZE_32BIT,
2223                                 BUS_DMA_ALLOCNOW,
2224                                 NULL, NULL,
2225                                 &sc->sc_buf_dtag);
2226         if (error) {
2227                 device_printf(sc->sc_dev, "can't create mbuf DMA tag\n");
2228                 return error;
2229         }
2230
2231         ntx = 0;
2232
2233         /*
2234          * Create TX mbuf DMA map
2235          */
2236         for (i = 0; i < BWI_TX_NRING; ++i) {
2237                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
2238
2239                 for (j = 0; j < BWI_TX_NDESC; ++j) {
2240                         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2241                                                   &tbd->tbd_buf[j].tb_dmap);
2242                         if (error) {
2243                                 device_printf(sc->sc_dev, "can't create "
2244                                               "%dth tbd, %dth DMA map\n", i, j);
2245
2246                                 ntx = i;
2247                                 for (k = 0; k < j; ++k) {
2248                                         bus_dmamap_destroy(sc->sc_buf_dtag,
2249                                                 tbd->tbd_buf[k].tb_dmap);
2250                                 }
2251                                 goto fail;
2252                         }
2253                 }
2254         }
2255         ntx = BWI_TX_NRING;
2256
2257         /*
2258          * Create RX mbuf DMA map and a spare DMA map
2259          */
2260         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2261                                   &rbd->rbd_tmp_dmap);
2262         if (error) {
2263                 device_printf(sc->sc_dev,
2264                               "can't create spare RX buf DMA map\n");
2265                 goto fail;
2266         }
2267
2268         for (j = 0; j < BWI_RX_NDESC; ++j) {
2269                 error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2270                                           &rbd->rbd_buf[j].rb_dmap);
2271                 if (error) {
2272                         device_printf(sc->sc_dev, "can't create %dth "
2273                                       "RX buf DMA map\n", j);
2274
2275                         for (k = 0; k < j; ++k) {
2276                                 bus_dmamap_destroy(sc->sc_buf_dtag,
2277                                         rbd->rbd_buf[j].rb_dmap);
2278                         }
2279                         bus_dmamap_destroy(sc->sc_buf_dtag,
2280                                            rbd->rbd_tmp_dmap);
2281                         goto fail;
2282                 }
2283         }
2284
2285         return 0;
2286 fail:
2287         bwi_dma_mbuf_destroy(sc, ntx, 0);
2288         return error;
2289 }
2290
2291 static void
2292 bwi_dma_mbuf_destroy(struct bwi_softc *sc, int ntx, int nrx)
2293 {
2294         int i, j;
2295
2296         if (sc->sc_buf_dtag == NULL)
2297                 return;
2298
2299         for (i = 0; i < ntx; ++i) {
2300                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
2301
2302                 for (j = 0; j < BWI_TX_NDESC; ++j) {
2303                         struct bwi_txbuf *tb = &tbd->tbd_buf[j];
2304
2305                         if (tb->tb_mbuf != NULL) {
2306                                 bus_dmamap_unload(sc->sc_buf_dtag,
2307                                                   tb->tb_dmap);
2308                                 m_freem(tb->tb_mbuf);
2309                         }
2310                         if (tb->tb_ni != NULL)
2311                                 ieee80211_free_node(tb->tb_ni);
2312                         bus_dmamap_destroy(sc->sc_buf_dtag, tb->tb_dmap);
2313                 }
2314         }
2315
2316         if (nrx) {
2317                 struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2318
2319                 bus_dmamap_destroy(sc->sc_buf_dtag, rbd->rbd_tmp_dmap);
2320                 for (j = 0; j < BWI_RX_NDESC; ++j) {
2321                         struct bwi_rxbuf *rb = &rbd->rbd_buf[j];
2322
2323                         if (rb->rb_mbuf != NULL) {
2324                                 bus_dmamap_unload(sc->sc_buf_dtag,
2325                                                   rb->rb_dmap);
2326                                 m_freem(rb->rb_mbuf);
2327                         }
2328                         bus_dmamap_destroy(sc->sc_buf_dtag, rb->rb_dmap);
2329                 }
2330         }
2331
2332         bus_dma_tag_destroy(sc->sc_buf_dtag);
2333         sc->sc_buf_dtag = NULL;
2334 }
2335
2336 static void
2337 bwi_enable_intrs(struct bwi_softc *sc, uint32_t enable_intrs)
2338 {
2339         CSR_SETBITS_4(sc, BWI_MAC_INTR_MASK, enable_intrs);
2340 }
2341
2342 static void
2343 bwi_disable_intrs(struct bwi_softc *sc, uint32_t disable_intrs)
2344 {
2345         CSR_CLRBITS_4(sc, BWI_MAC_INTR_MASK, disable_intrs);
2346 }
2347
2348 static int
2349 bwi_init_tx_ring32(struct bwi_softc *sc, int ring_idx)
2350 {
2351         struct bwi_ring_data *rd;
2352         struct bwi_txbuf_data *tbd;
2353         uint32_t val, addr_hi, addr_lo;
2354
2355         KASSERT(ring_idx < BWI_TX_NRING, ("ring_idx %d", ring_idx));
2356         rd = &sc->sc_tx_rdata[ring_idx];
2357         tbd = &sc->sc_tx_bdata[ring_idx];
2358
2359         tbd->tbd_idx = 0;
2360         tbd->tbd_used = 0;
2361
2362         bzero(rd->rdata_desc, sizeof(struct bwi_desc32) * BWI_TX_NDESC);
2363         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
2364                         BUS_DMASYNC_PREWRITE);
2365
2366         addr_lo = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
2367         addr_hi = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
2368
2369         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
2370               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
2371                         BWI_TXRX32_RINGINFO_FUNC_MASK);
2372         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, val);
2373
2374         val = __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
2375               BWI_TXRX32_CTRL_ENABLE;
2376         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, val);
2377
2378         return 0;
2379 }
2380
2381 static void
2382 bwi_init_rxdesc_ring32(struct bwi_softc *sc, uint32_t ctrl_base,
2383                        bus_addr_t paddr, int hdr_size, int ndesc)
2384 {
2385         uint32_t val, addr_hi, addr_lo;
2386
2387         addr_lo = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
2388         addr_hi = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
2389
2390         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
2391               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
2392                         BWI_TXRX32_RINGINFO_FUNC_MASK);
2393         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_RINGINFO, val);
2394
2395         val = __SHIFTIN(hdr_size, BWI_RX32_CTRL_HDRSZ_MASK) |
2396               __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
2397               BWI_TXRX32_CTRL_ENABLE;
2398         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_CTRL, val);
2399
2400         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
2401                     (ndesc - 1) * sizeof(struct bwi_desc32));
2402 }
2403
2404 static int
2405 bwi_init_rx_ring32(struct bwi_softc *sc)
2406 {
2407         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2408         int i, error;
2409
2410         sc->sc_rx_bdata.rbd_idx = 0;
2411
2412         for (i = 0; i < BWI_RX_NDESC; ++i) {
2413                 error = bwi_newbuf(sc, i, 1);
2414                 if (error) {
2415                         device_printf(sc->sc_dev,
2416                                   "can't allocate %dth RX buffer\n", i);
2417                         return error;
2418                 }
2419         }
2420         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
2421                         BUS_DMASYNC_PREWRITE);
2422
2423         bwi_init_rxdesc_ring32(sc, rd->rdata_txrx_ctrl, rd->rdata_paddr,
2424                                sizeof(struct bwi_rxbuf_hdr), BWI_RX_NDESC);
2425         return 0;
2426 }
2427
2428 static int
2429 bwi_init_txstats32(struct bwi_softc *sc)
2430 {
2431         struct bwi_txstats_data *st = sc->sc_txstats;
2432         bus_addr_t stats_paddr;
2433         int i;
2434
2435         bzero(st->stats, BWI_TXSTATS_NDESC * sizeof(struct bwi_txstats));
2436         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_PREWRITE);
2437
2438         st->stats_idx = 0;
2439
2440         stats_paddr = st->stats_paddr;
2441         for (i = 0; i < BWI_TXSTATS_NDESC; ++i) {
2442                 bwi_setup_desc32(sc, st->stats_ring, BWI_TXSTATS_NDESC, i,
2443                                  stats_paddr, sizeof(struct bwi_txstats), 0);
2444                 stats_paddr += sizeof(struct bwi_txstats);
2445         }
2446         bus_dmamap_sync(st->stats_ring_dtag, st->stats_ring_dmap,
2447                         BUS_DMASYNC_PREWRITE);
2448
2449         bwi_init_rxdesc_ring32(sc, st->stats_ctrl_base,
2450                                st->stats_ring_paddr, 0, BWI_TXSTATS_NDESC);
2451         return 0;
2452 }
2453
2454 static void
2455 bwi_setup_rx_desc32(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
2456                     int buf_len)
2457 {
2458         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2459
2460         KASSERT(buf_idx < BWI_RX_NDESC, ("buf_idx %d", buf_idx));
2461         bwi_setup_desc32(sc, rd->rdata_desc, BWI_RX_NDESC, buf_idx,
2462                          paddr, buf_len, 0);
2463 }
2464
2465 static void
2466 bwi_setup_tx_desc32(struct bwi_softc *sc, struct bwi_ring_data *rd,
2467                     int buf_idx, bus_addr_t paddr, int buf_len)
2468 {
2469         KASSERT(buf_idx < BWI_TX_NDESC, ("buf_idx %d", buf_idx));
2470         bwi_setup_desc32(sc, rd->rdata_desc, BWI_TX_NDESC, buf_idx,
2471                          paddr, buf_len, 1);
2472 }
2473
2474 static int
2475 bwi_init_tx_ring64(struct bwi_softc *sc, int ring_idx)
2476 {
2477         /* TODO:64 */
2478         return EOPNOTSUPP;
2479 }
2480
2481 static int
2482 bwi_init_rx_ring64(struct bwi_softc *sc)
2483 {
2484         /* TODO:64 */
2485         return EOPNOTSUPP;
2486 }
2487
2488 static int
2489 bwi_init_txstats64(struct bwi_softc *sc)
2490 {
2491         /* TODO:64 */
2492         return EOPNOTSUPP;
2493 }
2494
2495 static void
2496 bwi_setup_rx_desc64(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
2497                     int buf_len)
2498 {
2499         /* TODO:64 */
2500 }
2501
2502 static void
2503 bwi_setup_tx_desc64(struct bwi_softc *sc, struct bwi_ring_data *rd,
2504                     int buf_idx, bus_addr_t paddr, int buf_len)
2505 {
2506         /* TODO:64 */
2507 }
2508
2509 static void
2510 bwi_dma_buf_addr(void *arg, bus_dma_segment_t *seg, int nseg,
2511                  bus_size_t mapsz __unused, int error)
2512 {
2513         if (!error) {
2514                 KASSERT(nseg == 1, ("too many segments(%d)\n", nseg));
2515                 *((bus_addr_t *)arg) = seg->ds_addr;
2516         }
2517 }
2518
2519 static int
2520 bwi_newbuf(struct bwi_softc *sc, int buf_idx, int init)
2521 {
2522         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2523         struct bwi_rxbuf *rxbuf = &rbd->rbd_buf[buf_idx];
2524         struct bwi_rxbuf_hdr *hdr;
2525         bus_dmamap_t map;
2526         bus_addr_t paddr;
2527         struct mbuf *m;
2528         int error;
2529
2530         KASSERT(buf_idx < BWI_RX_NDESC, ("buf_idx %d", buf_idx));
2531
2532         m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
2533         if (m == NULL) {
2534                 error = ENOBUFS;
2535
2536                 /*
2537                  * If the NIC is up and running, we need to:
2538                  * - Clear RX buffer's header.
2539                  * - Restore RX descriptor settings.
2540                  */
2541                 if (init)
2542                         return error;
2543                 else
2544                         goto back;
2545         }
2546         m->m_len = m->m_pkthdr.len = MCLBYTES;
2547
2548         /*
2549          * Try to load RX buf into temporary DMA map
2550          */
2551         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, rbd->rbd_tmp_dmap, m,
2552                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
2553         if (error) {
2554                 m_freem(m);
2555
2556                 /*
2557                  * See the comment above
2558                  */
2559                 if (init)
2560                         return error;
2561                 else
2562                         goto back;
2563         }
2564
2565         if (!init)
2566                 bus_dmamap_unload(sc->sc_buf_dtag, rxbuf->rb_dmap);
2567         rxbuf->rb_mbuf = m;
2568         rxbuf->rb_paddr = paddr;
2569
2570         /*
2571          * Swap RX buf's DMA map with the loaded temporary one
2572          */
2573         map = rxbuf->rb_dmap;
2574         rxbuf->rb_dmap = rbd->rbd_tmp_dmap;
2575         rbd->rbd_tmp_dmap = map;
2576
2577 back:
2578         /*
2579          * Clear RX buf header
2580          */
2581         hdr = mtod(rxbuf->rb_mbuf, struct bwi_rxbuf_hdr *);
2582         bzero(hdr, sizeof(*hdr));
2583         bus_dmamap_sync(sc->sc_buf_dtag, rxbuf->rb_dmap, BUS_DMASYNC_PREWRITE);
2584
2585         /*
2586          * Setup RX buf descriptor
2587          */
2588         sc->sc_setup_rxdesc(sc, buf_idx, rxbuf->rb_paddr,
2589                             rxbuf->rb_mbuf->m_len - sizeof(*hdr));
2590         return error;
2591 }
2592
2593 static void
2594 bwi_set_addr_filter(struct bwi_softc *sc, uint16_t addr_ofs,
2595                     const uint8_t *addr)
2596 {
2597         int i;
2598
2599         CSR_WRITE_2(sc, BWI_ADDR_FILTER_CTRL,
2600                     BWI_ADDR_FILTER_CTRL_SET | addr_ofs);
2601
2602         for (i = 0; i < (IEEE80211_ADDR_LEN / 2); ++i) {
2603                 uint16_t addr_val;
2604
2605                 addr_val = (uint16_t)addr[i * 2] |
2606                            (((uint16_t)addr[(i * 2) + 1]) << 8);
2607                 CSR_WRITE_2(sc, BWI_ADDR_FILTER_DATA, addr_val);
2608         }
2609 }
2610
2611 static int
2612 bwi_rxeof(struct bwi_softc *sc, int end_idx)
2613 {
2614         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2615         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2616         struct ifnet *ifp = sc->sc_ifp;
2617         struct ieee80211com *ic = ifp->if_l2com;
2618         int idx, rx_data = 0;
2619
2620         idx = rbd->rbd_idx;
2621         while (idx != end_idx) {
2622                 struct bwi_rxbuf *rb = &rbd->rbd_buf[idx];
2623                 struct bwi_rxbuf_hdr *hdr;
2624                 struct ieee80211_frame_min *wh;
2625                 struct ieee80211_node *ni;
2626                 struct mbuf *m;
2627                 const void *plcp;
2628                 uint16_t flags2;
2629                 int buflen, wh_ofs, hdr_extra, rssi, noise, type, rate;
2630
2631                 m = rb->rb_mbuf;
2632                 bus_dmamap_sync(sc->sc_buf_dtag, rb->rb_dmap,
2633                                 BUS_DMASYNC_POSTREAD);
2634
2635                 if (bwi_newbuf(sc, idx, 0)) {
2636                         ifp->if_ierrors++;
2637                         goto next;
2638                 }
2639
2640                 hdr = mtod(m, struct bwi_rxbuf_hdr *);
2641                 flags2 = le16toh(hdr->rxh_flags2);
2642
2643                 hdr_extra = 0;
2644                 if (flags2 & BWI_RXH_F2_TYPE2FRAME)
2645                         hdr_extra = 2;
2646                 wh_ofs = hdr_extra + 6; /* XXX magic number */
2647
2648                 buflen = le16toh(hdr->rxh_buflen);
2649                 if (buflen < BWI_FRAME_MIN_LEN(wh_ofs)) {
2650                         if_printf(ifp, "%s: zero length data, hdr_extra %d\n",
2651                                   __func__, hdr_extra);
2652                         ifp->if_ierrors++;
2653                         m_freem(m);
2654                         goto next;
2655                 }
2656
2657                 plcp = ((const uint8_t *)(hdr + 1) + hdr_extra);
2658                 rssi = bwi_calc_rssi(sc, hdr);
2659                 noise = bwi_calc_noise(sc);
2660
2661                 m->m_pkthdr.rcvif = ifp;
2662                 m->m_len = m->m_pkthdr.len = buflen + sizeof(*hdr);
2663                 m_adj(m, sizeof(*hdr) + wh_ofs);
2664
2665                 if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_OFDM)
2666                         rate = bwi_ofdm_plcp2rate(plcp);
2667                 else
2668                         rate = bwi_ds_plcp2rate(plcp);
2669
2670                 /* RX radio tap */
2671                 if (ieee80211_radiotap_active(ic))
2672                         bwi_rx_radiotap(sc, m, hdr, plcp, rate, rssi, noise);
2673
2674                 m_adj(m, -IEEE80211_CRC_LEN);
2675
2676                 BWI_UNLOCK(sc);
2677
2678                 wh = mtod(m, struct ieee80211_frame_min *);
2679                 ni = ieee80211_find_rxnode(ic, wh);
2680                 if (ni != NULL) {
2681                         type = ieee80211_input(ni, m, rssi - noise, noise);
2682                         ieee80211_free_node(ni);
2683                 } else
2684                         type = ieee80211_input_all(ic, m, rssi - noise, noise);
2685                 if (type == IEEE80211_FC0_TYPE_DATA) {
2686                         rx_data = 1;
2687                         sc->sc_rx_rate = rate;
2688                 }
2689
2690                 BWI_LOCK(sc);
2691 next:
2692                 idx = (idx + 1) % BWI_RX_NDESC;
2693
2694                 if (sc->sc_flags & BWI_F_STOP) {
2695                         /*
2696                          * Take the fast lane, don't do
2697                          * any damage to softc
2698                          */
2699                         return -1;
2700                 }
2701         }
2702
2703         rbd->rbd_idx = idx;
2704         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
2705                         BUS_DMASYNC_PREWRITE);
2706
2707         return rx_data;
2708 }
2709
2710 static int
2711 bwi_rxeof32(struct bwi_softc *sc)
2712 {
2713         uint32_t val, rx_ctrl;
2714         int end_idx, rx_data;
2715
2716         rx_ctrl = sc->sc_rx_rdata.rdata_txrx_ctrl;
2717
2718         val = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
2719         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
2720                   sizeof(struct bwi_desc32);
2721
2722         rx_data = bwi_rxeof(sc, end_idx);
2723         if (rx_data >= 0) {
2724                 CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_INDEX,
2725                             end_idx * sizeof(struct bwi_desc32));
2726         }
2727         return rx_data;
2728 }
2729
2730 static int
2731 bwi_rxeof64(struct bwi_softc *sc)
2732 {
2733         /* TODO:64 */
2734         return 0;
2735 }
2736
2737 static void
2738 bwi_reset_rx_ring32(struct bwi_softc *sc, uint32_t rx_ctrl)
2739 {
2740         int i;
2741
2742         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_CTRL, 0);
2743
2744 #define NRETRY 10
2745
2746         for (i = 0; i < NRETRY; ++i) {
2747                 uint32_t status;
2748
2749                 status = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
2750                 if (__SHIFTOUT(status, BWI_RX32_STATUS_STATE_MASK) ==
2751                     BWI_RX32_STATUS_STATE_DISABLED)
2752                         break;
2753
2754                 DELAY(1000);
2755         }
2756         if (i == NRETRY)
2757                 device_printf(sc->sc_dev, "reset rx ring timedout\n");
2758
2759 #undef NRETRY
2760
2761         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_RINGINFO, 0);
2762 }
2763
2764 static void
2765 bwi_free_txstats32(struct bwi_softc *sc)
2766 {
2767         bwi_reset_rx_ring32(sc, sc->sc_txstats->stats_ctrl_base);
2768 }
2769
2770 static void
2771 bwi_free_rx_ring32(struct bwi_softc *sc)
2772 {
2773         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2774         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2775         int i;
2776
2777         bwi_reset_rx_ring32(sc, rd->rdata_txrx_ctrl);
2778
2779         for (i = 0; i < BWI_RX_NDESC; ++i) {
2780                 struct bwi_rxbuf *rb = &rbd->rbd_buf[i];
2781
2782                 if (rb->rb_mbuf != NULL) {
2783                         bus_dmamap_unload(sc->sc_buf_dtag, rb->rb_dmap);
2784                         m_freem(rb->rb_mbuf);
2785                         rb->rb_mbuf = NULL;
2786                 }
2787         }
2788 }
2789
2790 static void
2791 bwi_free_tx_ring32(struct bwi_softc *sc, int ring_idx)
2792 {
2793         struct bwi_ring_data *rd;
2794         struct bwi_txbuf_data *tbd;
2795         struct ifnet *ifp = sc->sc_ifp;
2796         uint32_t state, val;
2797         int i;
2798
2799         KASSERT(ring_idx < BWI_TX_NRING, ("ring_idx %d", ring_idx));
2800         rd = &sc->sc_tx_rdata[ring_idx];
2801         tbd = &sc->sc_tx_bdata[ring_idx];
2802
2803 #define NRETRY 10
2804
2805         for (i = 0; i < NRETRY; ++i) {
2806                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
2807                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
2808                 if (state == BWI_TX32_STATUS_STATE_DISABLED ||
2809                     state == BWI_TX32_STATUS_STATE_IDLE ||
2810                     state == BWI_TX32_STATUS_STATE_STOPPED)
2811                         break;
2812
2813                 DELAY(1000);
2814         }
2815         if (i == NRETRY) {
2816                 if_printf(ifp, "%s: wait for TX ring(%d) stable timed out\n",
2817                           __func__, ring_idx);
2818         }
2819
2820         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, 0);
2821         for (i = 0; i < NRETRY; ++i) {
2822                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
2823                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
2824                 if (state == BWI_TX32_STATUS_STATE_DISABLED)
2825                         break;
2826
2827                 DELAY(1000);
2828         }
2829         if (i == NRETRY)
2830                 if_printf(ifp, "%s: reset TX ring (%d) timed out\n",
2831                      __func__, ring_idx);
2832
2833 #undef NRETRY
2834
2835         DELAY(1000);
2836
2837         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, 0);
2838
2839         for (i = 0; i < BWI_TX_NDESC; ++i) {
2840                 struct bwi_txbuf *tb = &tbd->tbd_buf[i];
2841
2842                 if (tb->tb_mbuf != NULL) {
2843                         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
2844                         m_freem(tb->tb_mbuf);
2845                         tb->tb_mbuf = NULL;
2846                 }
2847                 if (tb->tb_ni != NULL) {
2848                         ieee80211_free_node(tb->tb_ni);
2849                         tb->tb_ni = NULL;
2850                 }
2851         }
2852 }
2853
2854 static void
2855 bwi_free_txstats64(struct bwi_softc *sc)
2856 {
2857         /* TODO:64 */
2858 }
2859
2860 static void
2861 bwi_free_rx_ring64(struct bwi_softc *sc)
2862 {
2863         /* TODO:64 */
2864 }
2865
2866 static void
2867 bwi_free_tx_ring64(struct bwi_softc *sc, int ring_idx)
2868 {
2869         /* TODO:64 */
2870 }
2871
2872 /* XXX does not belong here */
2873 #define IEEE80211_OFDM_PLCP_RATE_MASK   __BITS(3, 0)
2874 #define IEEE80211_OFDM_PLCP_LEN_MASK    __BITS(16, 5)
2875
2876 static __inline void
2877 bwi_ofdm_plcp_header(uint32_t *plcp0, int pkt_len, uint8_t rate)
2878 {
2879         uint32_t plcp;
2880
2881         plcp = __SHIFTIN(ieee80211_rate2plcp(rate, IEEE80211_T_OFDM),
2882                     IEEE80211_OFDM_PLCP_RATE_MASK) |
2883                __SHIFTIN(pkt_len, IEEE80211_OFDM_PLCP_LEN_MASK);
2884         *plcp0 = htole32(plcp);
2885 }
2886
2887 static __inline void
2888 bwi_ds_plcp_header(struct ieee80211_ds_plcp_hdr *plcp, int pkt_len,
2889                    uint8_t rate)
2890 {
2891         int len, service, pkt_bitlen;
2892
2893         pkt_bitlen = pkt_len * NBBY;
2894         len = howmany(pkt_bitlen * 2, rate);
2895
2896         service = IEEE80211_PLCP_SERVICE_LOCKED;
2897         if (rate == (11 * 2)) {
2898                 int pkt_bitlen1;
2899
2900                 /*
2901                  * PLCP service field needs to be adjusted,
2902                  * if TX rate is 11Mbytes/s
2903                  */
2904                 pkt_bitlen1 = len * 11;
2905                 if (pkt_bitlen1 - pkt_bitlen >= NBBY)
2906                         service |= IEEE80211_PLCP_SERVICE_LENEXT7;
2907         }
2908
2909         plcp->i_signal = ieee80211_rate2plcp(rate, IEEE80211_T_CCK);
2910         plcp->i_service = service;
2911         plcp->i_length = htole16(len);
2912         /* NOTE: do NOT touch i_crc */
2913 }
2914
2915 static __inline void
2916 bwi_plcp_header(const struct ieee80211_rate_table *rt,
2917         void *plcp, int pkt_len, uint8_t rate)
2918 {
2919         enum ieee80211_phytype modtype;
2920
2921         /*
2922          * Assume caller has zeroed 'plcp'
2923          */
2924         modtype = ieee80211_rate2phytype(rt, rate);
2925         if (modtype == IEEE80211_T_OFDM)
2926                 bwi_ofdm_plcp_header(plcp, pkt_len, rate);
2927         else if (modtype == IEEE80211_T_DS)
2928                 bwi_ds_plcp_header(plcp, pkt_len, rate);
2929         else
2930                 panic("unsupport modulation type %u\n", modtype);
2931 }
2932
2933 static int
2934 bwi_encap(struct bwi_softc *sc, int idx, struct mbuf *m,
2935           struct ieee80211_node *ni)
2936 {
2937         struct ieee80211vap *vap = ni->ni_vap;
2938         struct ifnet *ifp = sc->sc_ifp;
2939         struct ieee80211com *ic = ifp->if_l2com;
2940         struct bwi_ring_data *rd = &sc->sc_tx_rdata[BWI_TX_DATA_RING];
2941         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
2942         struct bwi_txbuf *tb = &tbd->tbd_buf[idx];
2943         struct bwi_mac *mac;
2944         struct bwi_txbuf_hdr *hdr;
2945         struct ieee80211_frame *wh;
2946         const struct ieee80211_txparam *tp;
2947         uint8_t rate, rate_fb;
2948         uint32_t mac_ctrl;
2949         uint16_t phy_ctrl;
2950         bus_addr_t paddr;
2951         int type, ismcast, pkt_len, error, rix;
2952 #if 0
2953         const uint8_t *p;
2954         int i;
2955 #endif
2956
2957         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
2958             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
2959         mac = (struct bwi_mac *)sc->sc_cur_regwin;
2960
2961         wh = mtod(m, struct ieee80211_frame *);
2962         type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
2963         ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
2964
2965         /* Get 802.11 frame len before prepending TX header */
2966         pkt_len = m->m_pkthdr.len + IEEE80211_CRC_LEN;
2967
2968         /*
2969          * Find TX rate
2970          */
2971         tp = &vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)];
2972         if (type != IEEE80211_FC0_TYPE_DATA || (m->m_flags & M_EAPOL)) {
2973                 rate = rate_fb = tp->mgmtrate;
2974         } else if (ismcast) {
2975                 rate = rate_fb = tp->mcastrate;
2976         } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) {
2977                 rate = rate_fb = tp->ucastrate;
2978         } else {
2979                 rix = ieee80211_ratectl_rate(ni, NULL, pkt_len);
2980                 rate = ni->ni_txrate;
2981
2982                 if (rix > 0) {
2983                         rate_fb = ni->ni_rates.rs_rates[rix-1] &
2984                                   IEEE80211_RATE_VAL;
2985                 } else {
2986                         rate_fb = rate;
2987                 }
2988         }
2989         tb->tb_rate[0] = rate;
2990         tb->tb_rate[1] = rate_fb;
2991         sc->sc_tx_rate = rate;
2992
2993         /*
2994          * TX radio tap
2995          */
2996         if (ieee80211_radiotap_active_vap(vap)) {
2997                 sc->sc_tx_th.wt_flags = 0;
2998                 if (wh->i_fc[1] & IEEE80211_FC1_WEP)
2999                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
3000                 if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_DS &&
3001                     (ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
3002                     rate != (1 * 2)) {
3003                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3004                 }
3005                 sc->sc_tx_th.wt_rate = rate;
3006
3007                 ieee80211_radiotap_tx(vap, m);
3008         }
3009
3010         /*
3011          * Setup the embedded TX header
3012          */
3013         M_PREPEND(m, sizeof(*hdr), M_DONTWAIT);
3014         if (m == NULL) {
3015                 if_printf(ifp, "%s: prepend TX header failed\n", __func__);
3016                 return ENOBUFS;
3017         }
3018         hdr = mtod(m, struct bwi_txbuf_hdr *);
3019
3020         bzero(hdr, sizeof(*hdr));
3021
3022         bcopy(wh->i_fc, hdr->txh_fc, sizeof(hdr->txh_fc));
3023         bcopy(wh->i_addr1, hdr->txh_addr1, sizeof(hdr->txh_addr1));
3024
3025         if (!ismcast) {
3026                 uint16_t dur;
3027
3028                 dur = ieee80211_ack_duration(sc->sc_rates, rate,
3029                     ic->ic_flags & ~IEEE80211_F_SHPREAMBLE);
3030
3031                 hdr->txh_fb_duration = htole16(dur);
3032         }
3033
3034         hdr->txh_id = __SHIFTIN(BWI_TX_DATA_RING, BWI_TXH_ID_RING_MASK) |
3035                       __SHIFTIN(idx, BWI_TXH_ID_IDX_MASK);
3036
3037         bwi_plcp_header(sc->sc_rates, hdr->txh_plcp, pkt_len, rate);
3038         bwi_plcp_header(sc->sc_rates, hdr->txh_fb_plcp, pkt_len, rate_fb);
3039
3040         phy_ctrl = __SHIFTIN(mac->mac_rf.rf_ant_mode,
3041                              BWI_TXH_PHY_C_ANTMODE_MASK);
3042         if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_OFDM)
3043                 phy_ctrl |= BWI_TXH_PHY_C_OFDM;
3044         else if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && rate != (2 * 1))
3045                 phy_ctrl |= BWI_TXH_PHY_C_SHPREAMBLE;
3046
3047         mac_ctrl = BWI_TXH_MAC_C_HWSEQ | BWI_TXH_MAC_C_FIRST_FRAG;
3048         if (!ismcast)
3049                 mac_ctrl |= BWI_TXH_MAC_C_ACK;
3050         if (ieee80211_rate2phytype(sc->sc_rates, rate_fb) == IEEE80211_T_OFDM)
3051                 mac_ctrl |= BWI_TXH_MAC_C_FB_OFDM;
3052
3053         hdr->txh_mac_ctrl = htole32(mac_ctrl);
3054         hdr->txh_phy_ctrl = htole16(phy_ctrl);
3055
3056         /* Catch any further usage */
3057         hdr = NULL;
3058         wh = NULL;
3059
3060         /* DMA load */
3061         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3062                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
3063         if (error && error != EFBIG) {
3064                 if_printf(ifp, "%s: can't load TX buffer (1) %d\n",
3065                     __func__, error);
3066                 goto back;
3067         }
3068
3069         if (error) {    /* error == EFBIG */
3070                 struct mbuf *m_new;
3071
3072                 m_new = m_defrag(m, M_DONTWAIT);
3073                 if (m_new == NULL) {
3074                         if_printf(ifp, "%s: can't defrag TX buffer\n",
3075                             __func__);
3076                         error = ENOBUFS;
3077                         goto back;
3078                 } else {
3079                         m = m_new;
3080                 }
3081
3082                 error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3083                                              bwi_dma_buf_addr, &paddr,
3084                                              BUS_DMA_NOWAIT);
3085                 if (error) {
3086                         if_printf(ifp, "%s: can't load TX buffer (2) %d\n",
3087                             __func__, error);
3088                         goto back;
3089                 }
3090         }
3091         error = 0;
3092
3093         bus_dmamap_sync(sc->sc_buf_dtag, tb->tb_dmap, BUS_DMASYNC_PREWRITE);
3094
3095         tb->tb_mbuf = m;
3096         tb->tb_ni = ni;
3097
3098 #if 0
3099         p = mtod(m, const uint8_t *);
3100         for (i = 0; i < m->m_pkthdr.len; ++i) {
3101                 if (i != 0 && i % 8 == 0)
3102                         printf("\n");
3103                 printf("%02x ", p[i]);
3104         }
3105         printf("\n");
3106 #endif
3107         DPRINTF(sc, BWI_DBG_TX, "idx %d, pkt_len %d, buflen %d\n",
3108                 idx, pkt_len, m->m_pkthdr.len);
3109
3110         /* Setup TX descriptor */
3111         sc->sc_setup_txdesc(sc, rd, idx, paddr, m->m_pkthdr.len);
3112         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
3113                         BUS_DMASYNC_PREWRITE);
3114
3115         /* Kick start */
3116         sc->sc_start_tx(sc, rd->rdata_txrx_ctrl, idx);
3117
3118 back:
3119         if (error)
3120                 m_freem(m);
3121         return error;
3122 }
3123
3124 static int
3125 bwi_encap_raw(struct bwi_softc *sc, int idx, struct mbuf *m,
3126           struct ieee80211_node *ni, const struct ieee80211_bpf_params *params)
3127 {
3128         struct ifnet *ifp = sc->sc_ifp;
3129         struct ieee80211vap *vap = ni->ni_vap;
3130         struct ieee80211com *ic = ni->ni_ic;
3131         struct bwi_ring_data *rd = &sc->sc_tx_rdata[BWI_TX_DATA_RING];
3132         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
3133         struct bwi_txbuf *tb = &tbd->tbd_buf[idx];
3134         struct bwi_mac *mac;
3135         struct bwi_txbuf_hdr *hdr;
3136         struct ieee80211_frame *wh;
3137         uint8_t rate, rate_fb;
3138         uint32_t mac_ctrl;
3139         uint16_t phy_ctrl;
3140         bus_addr_t paddr;
3141         int ismcast, pkt_len, error;
3142
3143         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3144             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3145         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3146
3147         wh = mtod(m, struct ieee80211_frame *);
3148         ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
3149
3150         /* Get 802.11 frame len before prepending TX header */
3151         pkt_len = m->m_pkthdr.len + IEEE80211_CRC_LEN;
3152
3153         /*
3154          * Find TX rate
3155          */
3156         rate = params->ibp_rate0;
3157         if (!ieee80211_isratevalid(ic->ic_rt, rate)) {
3158                 /* XXX fall back to mcast/mgmt rate? */
3159                 m_freem(m);
3160                 return EINVAL;
3161         }
3162         if (params->ibp_try1 != 0) {
3163                 rate_fb = params->ibp_rate1;
3164                 if (!ieee80211_isratevalid(ic->ic_rt, rate_fb)) {
3165                         /* XXX fall back to rate0? */
3166                         m_freem(m);
3167                         return EINVAL;
3168                 }
3169         } else
3170                 rate_fb = rate;
3171         tb->tb_rate[0] = rate;
3172         tb->tb_rate[1] = rate_fb;
3173         sc->sc_tx_rate = rate;
3174
3175         /*
3176          * TX radio tap
3177          */
3178         if (ieee80211_radiotap_active_vap(vap)) {
3179                 sc->sc_tx_th.wt_flags = 0;
3180                 /* XXX IEEE80211_BPF_CRYPTO */
3181                 if (wh->i_fc[1] & IEEE80211_FC1_WEP)
3182                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
3183                 if (params->ibp_flags & IEEE80211_BPF_SHORTPRE)
3184                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3185                 sc->sc_tx_th.wt_rate = rate;
3186
3187                 ieee80211_radiotap_tx(vap, m);
3188         }
3189
3190         /*
3191          * Setup the embedded TX header
3192          */
3193         M_PREPEND(m, sizeof(*hdr), M_DONTWAIT);
3194         if (m == NULL) {
3195                 if_printf(ifp, "%s: prepend TX header failed\n", __func__);
3196                 return ENOBUFS;
3197         }
3198         hdr = mtod(m, struct bwi_txbuf_hdr *);
3199
3200         bzero(hdr, sizeof(*hdr));
3201
3202         bcopy(wh->i_fc, hdr->txh_fc, sizeof(hdr->txh_fc));
3203         bcopy(wh->i_addr1, hdr->txh_addr1, sizeof(hdr->txh_addr1));
3204
3205         mac_ctrl = BWI_TXH_MAC_C_HWSEQ | BWI_TXH_MAC_C_FIRST_FRAG;
3206         if (!ismcast && (params->ibp_flags & IEEE80211_BPF_NOACK) == 0) {
3207                 uint16_t dur;
3208
3209                 dur = ieee80211_ack_duration(sc->sc_rates, rate_fb, 0);
3210
3211                 hdr->txh_fb_duration = htole16(dur);
3212                 mac_ctrl |= BWI_TXH_MAC_C_ACK;
3213         }
3214
3215         hdr->txh_id = __SHIFTIN(BWI_TX_DATA_RING, BWI_TXH_ID_RING_MASK) |
3216                       __SHIFTIN(idx, BWI_TXH_ID_IDX_MASK);
3217
3218         bwi_plcp_header(sc->sc_rates, hdr->txh_plcp, pkt_len, rate);
3219         bwi_plcp_header(sc->sc_rates, hdr->txh_fb_plcp, pkt_len, rate_fb);
3220
3221         phy_ctrl = __SHIFTIN(mac->mac_rf.rf_ant_mode,
3222                              BWI_TXH_PHY_C_ANTMODE_MASK);
3223         if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_OFDM) {
3224                 phy_ctrl |= BWI_TXH_PHY_C_OFDM;
3225                 mac_ctrl |= BWI_TXH_MAC_C_FB_OFDM;
3226         } else if (params->ibp_flags & IEEE80211_BPF_SHORTPRE)
3227                 phy_ctrl |= BWI_TXH_PHY_C_SHPREAMBLE;
3228
3229         hdr->txh_mac_ctrl = htole32(mac_ctrl);
3230         hdr->txh_phy_ctrl = htole16(phy_ctrl);
3231
3232         /* Catch any further usage */
3233         hdr = NULL;
3234         wh = NULL;
3235
3236         /* DMA load */
3237         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3238                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
3239         if (error != 0) {
3240                 struct mbuf *m_new;
3241
3242                 if (error != EFBIG) {
3243                         if_printf(ifp, "%s: can't load TX buffer (1) %d\n",
3244                             __func__, error);
3245                         goto back;
3246                 }
3247                 m_new = m_defrag(m, M_DONTWAIT);
3248                 if (m_new == NULL) {
3249                         if_printf(ifp, "%s: can't defrag TX buffer\n",
3250                             __func__);
3251                         error = ENOBUFS;
3252                         goto back;
3253                 }
3254                 m = m_new;
3255                 error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3256                                              bwi_dma_buf_addr, &paddr,
3257                                              BUS_DMA_NOWAIT);
3258                 if (error) {
3259                         if_printf(ifp, "%s: can't load TX buffer (2) %d\n",
3260                             __func__, error);
3261                         goto back;
3262                 }
3263         }
3264
3265         bus_dmamap_sync(sc->sc_buf_dtag, tb->tb_dmap, BUS_DMASYNC_PREWRITE);
3266
3267         tb->tb_mbuf = m;
3268         tb->tb_ni = ni;
3269
3270         DPRINTF(sc, BWI_DBG_TX, "idx %d, pkt_len %d, buflen %d\n",
3271                 idx, pkt_len, m->m_pkthdr.len);
3272
3273         /* Setup TX descriptor */
3274         sc->sc_setup_txdesc(sc, rd, idx, paddr, m->m_pkthdr.len);
3275         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
3276                         BUS_DMASYNC_PREWRITE);
3277
3278         /* Kick start */
3279         sc->sc_start_tx(sc, rd->rdata_txrx_ctrl, idx);
3280 back:
3281         if (error)
3282                 m_freem(m);
3283         return error;
3284 }
3285
3286 static void
3287 bwi_start_tx32(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
3288 {
3289         idx = (idx + 1) % BWI_TX_NDESC;
3290         CSR_WRITE_4(sc, tx_ctrl + BWI_TX32_INDEX,
3291                     idx * sizeof(struct bwi_desc32));
3292 }
3293
3294 static void
3295 bwi_start_tx64(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
3296 {
3297         /* TODO:64 */
3298 }
3299
3300 static void
3301 bwi_txeof_status32(struct bwi_softc *sc)
3302 {
3303         struct ifnet *ifp = sc->sc_ifp;
3304         uint32_t val, ctrl_base;
3305         int end_idx;
3306
3307         ctrl_base = sc->sc_txstats->stats_ctrl_base;
3308
3309         val = CSR_READ_4(sc, ctrl_base + BWI_RX32_STATUS);
3310         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
3311                   sizeof(struct bwi_desc32);
3312
3313         bwi_txeof_status(sc, end_idx);
3314
3315         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
3316                     end_idx * sizeof(struct bwi_desc32));
3317
3318         if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0)
3319                 ifp->if_start(ifp);
3320 }
3321
3322 static void
3323 bwi_txeof_status64(struct bwi_softc *sc)
3324 {
3325         /* TODO:64 */
3326 }
3327
3328 static void
3329 _bwi_txeof(struct bwi_softc *sc, uint16_t tx_id, int acked, int data_txcnt)
3330 {
3331         struct ifnet *ifp = sc->sc_ifp;
3332         struct bwi_txbuf_data *tbd;
3333         struct bwi_txbuf *tb;
3334         int ring_idx, buf_idx;
3335         struct ieee80211_node *ni;
3336         struct ieee80211vap *vap;
3337
3338         if (tx_id == 0) {
3339                 if_printf(ifp, "%s: zero tx id\n", __func__);
3340                 return;
3341         }
3342
3343         ring_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_RING_MASK);
3344         buf_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_IDX_MASK);
3345
3346         KASSERT(ring_idx == BWI_TX_DATA_RING, ("ring_idx %d", ring_idx));
3347         KASSERT(buf_idx < BWI_TX_NDESC, ("buf_idx %d", buf_idx));
3348
3349         tbd = &sc->sc_tx_bdata[ring_idx];
3350         KASSERT(tbd->tbd_used > 0, ("tbd_used %d", tbd->tbd_used));
3351         tbd->tbd_used--;
3352
3353         tb = &tbd->tbd_buf[buf_idx];
3354         DPRINTF(sc, BWI_DBG_TXEOF, "txeof idx %d, "
3355                 "acked %d, data_txcnt %d, ni %p\n",
3356                 buf_idx, acked, data_txcnt, tb->tb_ni);
3357
3358         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
3359
3360         ni = tb->tb_ni;
3361         if (tb->tb_ni != NULL) {
3362                 const struct bwi_txbuf_hdr *hdr =
3363                     mtod(tb->tb_mbuf, const struct bwi_txbuf_hdr *);
3364                 vap = ni->ni_vap;
3365
3366                 /* NB: update rate control only for unicast frames */
3367                 if (hdr->txh_mac_ctrl & htole32(BWI_TXH_MAC_C_ACK)) {
3368                         /*
3369                          * Feed back 'acked and data_txcnt'.  Note that the
3370                          * generic AMRR code only understands one tx rate
3371                          * and the estimator doesn't handle real retry counts
3372                          * well so to avoid over-aggressive downshifting we
3373                          * treat any number of retries as "1".
3374                          */
3375                         ieee80211_ratectl_tx_complete(vap, ni,
3376                             (data_txcnt > 1) ? IEEE80211_RATECTL_TX_SUCCESS :
3377                                 IEEE80211_RATECTL_TX_FAILURE, &acked, NULL);
3378                 }
3379
3380                 /*
3381                  * Do any tx complete callback.  Note this must
3382                  * be done before releasing the node reference.
3383                  */
3384                 if (tb->tb_mbuf->m_flags & M_TXCB)
3385                         ieee80211_process_callback(ni, tb->tb_mbuf, !acked);
3386
3387                 ieee80211_free_node(tb->tb_ni);
3388                 tb->tb_ni = NULL;
3389         }
3390         m_freem(tb->tb_mbuf);
3391         tb->tb_mbuf = NULL;
3392
3393         if (tbd->tbd_used == 0)
3394                 ifp->if_timer = 0;
3395
3396         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
3397 }
3398
3399 static void
3400 bwi_txeof_status(struct bwi_softc *sc, int end_idx)
3401 {
3402         struct bwi_txstats_data *st = sc->sc_txstats;
3403         int idx;
3404
3405         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_POSTREAD);
3406
3407         idx = st->stats_idx;
3408         while (idx != end_idx) {
3409                 const struct bwi_txstats *stats = &st->stats[idx];
3410
3411                 if ((stats->txs_flags & BWI_TXS_F_PENDING) == 0) {
3412                         int data_txcnt;
3413
3414                         data_txcnt = __SHIFTOUT(stats->txs_txcnt,
3415                                                 BWI_TXS_TXCNT_DATA);
3416                         _bwi_txeof(sc, le16toh(stats->txs_id),
3417                                    stats->txs_flags & BWI_TXS_F_ACKED,
3418                                    data_txcnt);
3419                 }
3420                 idx = (idx + 1) % BWI_TXSTATS_NDESC;
3421         }
3422         st->stats_idx = idx;
3423 }
3424
3425 static void
3426 bwi_txeof(struct bwi_softc *sc)
3427 {
3428         struct ifnet *ifp = sc->sc_ifp;
3429
3430         for (;;) {
3431                 uint32_t tx_status0, tx_status1;
3432                 uint16_t tx_id;
3433                 int data_txcnt;
3434
3435                 tx_status0 = CSR_READ_4(sc, BWI_TXSTATUS0);
3436                 if ((tx_status0 & BWI_TXSTATUS0_VALID) == 0)
3437                         break;
3438                 tx_status1 = CSR_READ_4(sc, BWI_TXSTATUS1);
3439
3440                 tx_id = __SHIFTOUT(tx_status0, BWI_TXSTATUS0_TXID_MASK);
3441                 data_txcnt = __SHIFTOUT(tx_status0,
3442                                 BWI_TXSTATUS0_DATA_TXCNT_MASK);
3443
3444                 if (tx_status0 & (BWI_TXSTATUS0_AMPDU | BWI_TXSTATUS0_PENDING))
3445                         continue;
3446
3447                 _bwi_txeof(sc, le16toh(tx_id), tx_status0 & BWI_TXSTATUS0_ACKED,
3448                     data_txcnt);
3449         }
3450
3451         if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0)
3452                 ifp->if_start(ifp);
3453 }
3454
3455 static int
3456 bwi_bbp_power_on(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
3457 {
3458         bwi_power_on(sc, 1);
3459         return bwi_set_clock_mode(sc, clk_mode);
3460 }
3461
3462 static void
3463 bwi_bbp_power_off(struct bwi_softc *sc)
3464 {
3465         bwi_set_clock_mode(sc, BWI_CLOCK_MODE_SLOW);
3466         bwi_power_off(sc, 1);
3467 }
3468
3469 static int
3470 bwi_get_pwron_delay(struct bwi_softc *sc)
3471 {
3472         struct bwi_regwin *com, *old;
3473         struct bwi_clock_freq freq;
3474         uint32_t val;
3475         int error;
3476
3477         com = &sc->sc_com_regwin;
3478         KASSERT(BWI_REGWIN_EXIST(com), ("no regwin"));
3479
3480         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
3481                 return 0;
3482
3483         error = bwi_regwin_switch(sc, com, &old);
3484         if (error)
3485                 return error;
3486
3487         bwi_get_clock_freq(sc, &freq);
3488
3489         val = CSR_READ_4(sc, BWI_PLL_ON_DELAY);
3490         sc->sc_pwron_delay = howmany((val + 2) * 1000000, freq.clkfreq_min);
3491         DPRINTF(sc, BWI_DBG_ATTACH, "power on delay %u\n", sc->sc_pwron_delay);
3492
3493         return bwi_regwin_switch(sc, old, NULL);
3494 }
3495
3496 static int
3497 bwi_bus_attach(struct bwi_softc *sc)
3498 {
3499         struct bwi_regwin *bus, *old;
3500         int error;
3501
3502         bus = &sc->sc_bus_regwin;
3503
3504         error = bwi_regwin_switch(sc, bus, &old);
3505         if (error)
3506                 return error;
3507
3508         if (!bwi_regwin_is_enabled(sc, bus))
3509                 bwi_regwin_enable(sc, bus, 0);
3510
3511         /* Disable interripts */
3512         CSR_WRITE_4(sc, BWI_INTRVEC, 0);
3513
3514         return bwi_regwin_switch(sc, old, NULL);
3515 }
3516
3517 static const char *
3518 bwi_regwin_name(const struct bwi_regwin *rw)
3519 {
3520         switch (rw->rw_type) {
3521         case BWI_REGWIN_T_COM:
3522                 return "COM";
3523         case BWI_REGWIN_T_BUSPCI:
3524                 return "PCI";
3525         case BWI_REGWIN_T_MAC:
3526                 return "MAC";
3527         case BWI_REGWIN_T_BUSPCIE:
3528                 return "PCIE";
3529         }
3530         panic("unknown regwin type 0x%04x\n", rw->rw_type);
3531         return NULL;
3532 }
3533
3534 static uint32_t
3535 bwi_regwin_disable_bits(struct bwi_softc *sc)
3536 {
3537         uint32_t busrev;
3538
3539         /* XXX cache this */
3540         busrev = __SHIFTOUT(CSR_READ_4(sc, BWI_ID_LO), BWI_ID_LO_BUSREV_MASK);
3541         DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_MISC,
3542                 "bus rev %u\n", busrev);
3543
3544         if (busrev == BWI_BUSREV_0)
3545                 return BWI_STATE_LO_DISABLE1;
3546         else if (busrev == BWI_BUSREV_1)
3547                 return BWI_STATE_LO_DISABLE2;
3548         else
3549                 return (BWI_STATE_LO_DISABLE1 | BWI_STATE_LO_DISABLE2);
3550 }
3551
3552 int
3553 bwi_regwin_is_enabled(struct bwi_softc *sc, struct bwi_regwin *rw)
3554 {
3555         uint32_t val, disable_bits;
3556
3557         disable_bits = bwi_regwin_disable_bits(sc);
3558         val = CSR_READ_4(sc, BWI_STATE_LO);
3559
3560         if ((val & (BWI_STATE_LO_CLOCK |
3561                     BWI_STATE_LO_RESET |
3562                     disable_bits)) == BWI_STATE_LO_CLOCK) {
3563                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is enabled\n",
3564                         bwi_regwin_name(rw));
3565                 return 1;
3566         } else {
3567                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is disabled\n",
3568                         bwi_regwin_name(rw));
3569                 return 0;
3570         }
3571 }
3572
3573 void
3574 bwi_regwin_disable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
3575 {
3576         uint32_t state_lo, disable_bits;
3577         int i;
3578
3579         state_lo = CSR_READ_4(sc, BWI_STATE_LO);
3580
3581         /*
3582          * If current regwin is in 'reset' state, it was already disabled.
3583          */
3584         if (state_lo & BWI_STATE_LO_RESET) {
3585                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT,
3586                         "%s was already disabled\n", bwi_regwin_name(rw));
3587                 return;
3588         }
3589
3590         disable_bits = bwi_regwin_disable_bits(sc);
3591
3592         /*
3593          * Disable normal clock
3594          */
3595         state_lo = BWI_STATE_LO_CLOCK | disable_bits;
3596         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3597
3598         /*
3599          * Wait until normal clock is disabled
3600          */
3601 #define NRETRY  1000
3602         for (i = 0; i < NRETRY; ++i) {
3603                 state_lo = CSR_READ_4(sc, BWI_STATE_LO);
3604                 if (state_lo & disable_bits)
3605                         break;
3606                 DELAY(10);
3607         }
3608         if (i == NRETRY) {
3609                 device_printf(sc->sc_dev, "%s disable clock timeout\n",
3610                               bwi_regwin_name(rw));
3611         }
3612
3613         for (i = 0; i < NRETRY; ++i) {
3614                 uint32_t state_hi;
3615
3616                 state_hi = CSR_READ_4(sc, BWI_STATE_HI);
3617                 if ((state_hi & BWI_STATE_HI_BUSY) == 0)
3618                         break;
3619                 DELAY(10);
3620         }
3621         if (i == NRETRY) {
3622                 device_printf(sc->sc_dev, "%s wait BUSY unset timeout\n",
3623                               bwi_regwin_name(rw));
3624         }
3625 #undef NRETRY
3626
3627         /*
3628          * Reset and disable regwin with gated clock
3629          */
3630         state_lo = BWI_STATE_LO_RESET | disable_bits |
3631                    BWI_STATE_LO_CLOCK | BWI_STATE_LO_GATED_CLOCK |
3632                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3633         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3634
3635         /* Flush pending bus write */
3636         CSR_READ_4(sc, BWI_STATE_LO);
3637         DELAY(1);
3638
3639         /* Reset and disable regwin */
3640         state_lo = BWI_STATE_LO_RESET | disable_bits |
3641                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3642         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3643
3644         /* Flush pending bus write */
3645         CSR_READ_4(sc, BWI_STATE_LO);
3646         DELAY(1);
3647 }
3648
3649 void
3650 bwi_regwin_enable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
3651 {
3652         uint32_t state_lo, state_hi, imstate;
3653
3654         bwi_regwin_disable(sc, rw, flags);
3655
3656         /* Reset regwin with gated clock */
3657         state_lo = BWI_STATE_LO_RESET |
3658                    BWI_STATE_LO_CLOCK |
3659                    BWI_STATE_LO_GATED_CLOCK |
3660                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3661         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3662
3663         /* Flush pending bus write */
3664         CSR_READ_4(sc, BWI_STATE_LO);
3665         DELAY(1);
3666
3667         state_hi = CSR_READ_4(sc, BWI_STATE_HI);
3668         if (state_hi & BWI_STATE_HI_SERROR)
3669                 CSR_WRITE_4(sc, BWI_STATE_HI, 0);
3670
3671         imstate = CSR_READ_4(sc, BWI_IMSTATE);
3672         if (imstate & (BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT)) {
3673                 imstate &= ~(BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT);
3674                 CSR_WRITE_4(sc, BWI_IMSTATE, imstate);
3675         }
3676
3677         /* Enable regwin with gated clock */
3678         state_lo = BWI_STATE_LO_CLOCK |
3679                    BWI_STATE_LO_GATED_CLOCK |
3680                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3681         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3682
3683         /* Flush pending bus write */
3684         CSR_READ_4(sc, BWI_STATE_LO);
3685         DELAY(1);
3686
3687         /* Enable regwin with normal clock */
3688         state_lo = BWI_STATE_LO_CLOCK |
3689                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3690         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3691
3692         /* Flush pending bus write */
3693         CSR_READ_4(sc, BWI_STATE_LO);
3694         DELAY(1);
3695 }
3696
3697 static void
3698 bwi_set_bssid(struct bwi_softc *sc, const uint8_t *bssid)
3699 {
3700         struct ifnet *ifp = sc->sc_ifp;
3701         struct bwi_mac *mac;
3702         struct bwi_myaddr_bssid buf;
3703         const uint8_t *p;
3704         uint32_t val;
3705         int n, i;
3706
3707         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3708             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3709         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3710
3711         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_BSSID, bssid);
3712
3713         bcopy(IF_LLADDR(ifp), buf.myaddr, sizeof(buf.myaddr));
3714         bcopy(bssid, buf.bssid, sizeof(buf.bssid));
3715
3716         n = sizeof(buf) / sizeof(val);
3717         p = (const uint8_t *)&buf;
3718         for (i = 0; i < n; ++i) {
3719                 int j;
3720
3721                 val = 0;
3722                 for (j = 0; j < sizeof(val); ++j)
3723                         val |= ((uint32_t)(*p++)) << (j * 8);
3724
3725                 TMPLT_WRITE_4(mac, 0x20 + (i * sizeof(val)), val);
3726         }
3727 }
3728
3729 static void
3730 bwi_updateslot(struct ifnet *ifp)
3731 {
3732         struct bwi_softc *sc = ifp->if_softc;
3733         struct ieee80211com *ic = ifp->if_l2com;
3734         struct bwi_mac *mac;
3735
3736         BWI_LOCK(sc);
3737         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
3738                 DPRINTF(sc, BWI_DBG_80211, "%s\n", __func__);
3739
3740                 KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3741                     ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3742                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
3743
3744                 bwi_mac_updateslot(mac, (ic->ic_flags & IEEE80211_F_SHSLOT));
3745         }
3746         BWI_UNLOCK(sc);
3747 }
3748
3749 static void
3750 bwi_calibrate(void *xsc)
3751 {
3752         struct bwi_softc *sc = xsc;
3753 #ifdef INVARIANTS
3754         struct ifnet *ifp = sc->sc_ifp;
3755         struct ieee80211com *ic = ifp->if_l2com;
3756 #endif
3757         struct bwi_mac *mac;
3758
3759         BWI_ASSERT_LOCKED(sc);
3760
3761         KASSERT(ic->ic_opmode != IEEE80211_M_MONITOR,
3762             ("opmode %d", ic->ic_opmode));
3763
3764         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3765             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3766         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3767
3768         bwi_mac_calibrate_txpower(mac, sc->sc_txpwrcb_type);
3769         sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
3770
3771         /* XXX 15 seconds */
3772         callout_reset(&sc->sc_calib_ch, hz * 15, bwi_calibrate, sc);
3773 }
3774
3775 static int
3776 bwi_calc_rssi(struct bwi_softc *sc, const struct bwi_rxbuf_hdr *hdr)
3777 {
3778         struct bwi_mac *mac;
3779
3780         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3781             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3782         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3783
3784         return bwi_rf_calc_rssi(mac, hdr);
3785 }
3786
3787 static int
3788 bwi_calc_noise(struct bwi_softc *sc)
3789 {
3790         struct bwi_mac *mac;
3791
3792         KASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC,
3793             ("current regwin type %d", sc->sc_cur_regwin->rw_type));
3794         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3795
3796         return bwi_rf_calc_noise(mac);
3797 }
3798
3799 static __inline uint8_t
3800 bwi_ofdm_plcp2rate(const uint32_t *plcp0)
3801 {
3802         uint32_t plcp;
3803         uint8_t plcp_rate;
3804
3805         plcp = le32toh(*plcp0);
3806         plcp_rate = __SHIFTOUT(plcp, IEEE80211_OFDM_PLCP_RATE_MASK);
3807         return ieee80211_plcp2rate(plcp_rate, IEEE80211_T_OFDM);
3808 }
3809
3810 static __inline uint8_t
3811 bwi_ds_plcp2rate(const struct ieee80211_ds_plcp_hdr *hdr)
3812 {
3813         return ieee80211_plcp2rate(hdr->i_signal, IEEE80211_T_DS);
3814 }
3815
3816 static void
3817 bwi_rx_radiotap(struct bwi_softc *sc, struct mbuf *m,
3818     struct bwi_rxbuf_hdr *hdr, const void *plcp, int rate, int rssi, int noise)
3819 {
3820         const struct ieee80211_frame_min *wh;
3821
3822         sc->sc_rx_th.wr_flags = IEEE80211_RADIOTAP_F_FCS;
3823         if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_SHPREAMBLE)
3824                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3825
3826         wh = mtod(m, const struct ieee80211_frame_min *);
3827         if (wh->i_fc[1] & IEEE80211_FC1_WEP)
3828                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_WEP;
3829
3830         sc->sc_rx_th.wr_tsf = hdr->rxh_tsf; /* No endian convertion */
3831         sc->sc_rx_th.wr_rate = rate;
3832         sc->sc_rx_th.wr_antsignal = rssi;
3833         sc->sc_rx_th.wr_antnoise = noise;
3834 }
3835
3836 static void
3837 bwi_led_attach(struct bwi_softc *sc)
3838 {
3839         const uint8_t *led_act = NULL;
3840         uint16_t gpio, val[BWI_LED_MAX];
3841         int i;
3842
3843 #define N(arr)  (int)(sizeof(arr) / sizeof(arr[0]))
3844
3845         for (i = 0; i < N(bwi_vendor_led_act); ++i) {
3846                 if (sc->sc_pci_subvid == bwi_vendor_led_act[i].vid) {
3847                         led_act = bwi_vendor_led_act[i].led_act;
3848                         break;
3849                 }
3850         }
3851         if (led_act == NULL)
3852                 led_act = bwi_default_led_act;
3853
3854 #undef N
3855
3856         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO01);
3857         val[0] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_0);
3858         val[1] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_1);
3859
3860         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO23);
3861         val[2] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_2);
3862         val[3] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_3);
3863
3864         for (i = 0; i < BWI_LED_MAX; ++i) {
3865                 struct bwi_led *led = &sc->sc_leds[i];
3866
3867                 if (val[i] == 0xff) {
3868                         led->l_act = led_act[i];
3869                 } else {
3870                         if (val[i] & BWI_LED_ACT_LOW)
3871                                 led->l_flags |= BWI_LED_F_ACTLOW;
3872                         led->l_act = __SHIFTOUT(val[i], BWI_LED_ACT_MASK);
3873                 }
3874                 led->l_mask = (1 << i);
3875
3876                 if (led->l_act == BWI_LED_ACT_BLINK_SLOW ||
3877                     led->l_act == BWI_LED_ACT_BLINK_POLL ||
3878                     led->l_act == BWI_LED_ACT_BLINK) {
3879                         led->l_flags |= BWI_LED_F_BLINK;
3880                         if (led->l_act == BWI_LED_ACT_BLINK_POLL)
3881                                 led->l_flags |= BWI_LED_F_POLLABLE;
3882                         else if (led->l_act == BWI_LED_ACT_BLINK_SLOW)
3883                                 led->l_flags |= BWI_LED_F_SLOW;
3884
3885                         if (sc->sc_blink_led == NULL) {
3886                                 sc->sc_blink_led = led;
3887                                 if (led->l_flags & BWI_LED_F_SLOW)
3888                                         BWI_LED_SLOWDOWN(sc->sc_led_idle);
3889                         }
3890                 }
3891
3892                 DPRINTF(sc, BWI_DBG_LED | BWI_DBG_ATTACH,
3893                         "%dth led, act %d, lowact %d\n", i,
3894                         led->l_act, led->l_flags & BWI_LED_F_ACTLOW);
3895         }
3896         callout_init(&sc->sc_led_blink_ch, CALLOUT_MPSAFE);
3897 }
3898
3899 static __inline uint16_t
3900 bwi_led_onoff(const struct bwi_led *led, uint16_t val, int on)
3901 {
3902         if (led->l_flags & BWI_LED_F_ACTLOW)
3903                 on = !on;
3904         if (on)
3905                 val |= led->l_mask;
3906         else
3907                 val &= ~led->l_mask;
3908         return val;
3909 }
3910
3911 static void
3912 bwi_led_newstate(struct bwi_softc *sc, enum ieee80211_state nstate)
3913 {
3914         struct ifnet *ifp = sc->sc_ifp;
3915         struct ieee80211com *ic = ifp->if_l2com;
3916         uint16_t val;
3917         int i;
3918
3919         if (nstate == IEEE80211_S_INIT) {
3920                 callout_stop(&sc->sc_led_blink_ch);
3921                 sc->sc_led_blinking = 0;
3922         }
3923
3924         if ((ic->ic_ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
3925                 return;
3926
3927         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
3928         for (i = 0; i < BWI_LED_MAX; ++i) {
3929                 struct bwi_led *led = &sc->sc_leds[i];
3930                 int on;
3931
3932                 if (led->l_act == BWI_LED_ACT_UNKN ||
3933                     led->l_act == BWI_LED_ACT_NULL)
3934                         continue;
3935
3936                 if ((led->l_flags & BWI_LED_F_BLINK) &&
3937                     nstate != IEEE80211_S_INIT)
3938                         continue;
3939
3940                 switch (led->l_act) {
3941                 case BWI_LED_ACT_ON:    /* Always on */
3942                         on = 1;
3943                         break;
3944                 case BWI_LED_ACT_OFF:   /* Always off */
3945                 case BWI_LED_ACT_5GHZ:  /* TODO: 11A */
3946                         on = 0;
3947                         break;
3948                 default:
3949                         on = 1;
3950                         switch (nstate) {
3951                         case IEEE80211_S_INIT:
3952                                 on = 0;
3953                                 break;
3954                         case IEEE80211_S_RUN:
3955                                 if (led->l_act == BWI_LED_ACT_11G &&
3956                                     ic->ic_curmode != IEEE80211_MODE_11G)
3957                                         on = 0;
3958                                 break;
3959                         default:
3960                                 if (led->l_act == BWI_LED_ACT_ASSOC)
3961                                         on = 0;
3962                                 break;
3963                         }
3964                         break;
3965                 }
3966
3967                 val = bwi_led_onoff(led, val, on);
3968         }
3969         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
3970 }
3971 static void
3972 bwi_led_event(struct bwi_softc *sc, int event)
3973 {
3974         struct bwi_led *led = sc->sc_blink_led;
3975         int rate;
3976
3977         if (event == BWI_LED_EVENT_POLL) {
3978                 if ((led->l_flags & BWI_LED_F_POLLABLE) == 0)
3979                         return;
3980                 if (ticks - sc->sc_led_ticks < sc->sc_led_idle)
3981                         return;
3982         }
3983
3984         sc->sc_led_ticks = ticks;
3985         if (sc->sc_led_blinking)
3986                 return;
3987
3988         switch (event) {
3989         case BWI_LED_EVENT_RX:
3990                 rate = sc->sc_rx_rate;
3991                 break;
3992         case BWI_LED_EVENT_TX:
3993                 rate = sc->sc_tx_rate;
3994                 break;
3995         case BWI_LED_EVENT_POLL:
3996                 rate = 0;
3997                 break;
3998         default:
3999                 panic("unknown LED event %d\n", event);
4000                 break;
4001         }
4002         bwi_led_blink_start(sc, bwi_led_duration[rate].on_dur,
4003             bwi_led_duration[rate].off_dur);
4004 }
4005
4006 static void
4007 bwi_led_blink_start(struct bwi_softc *sc, int on_dur, int off_dur)
4008 {
4009         struct bwi_led *led = sc->sc_blink_led;
4010         uint16_t val;
4011
4012         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
4013         val = bwi_led_onoff(led, val, 1);
4014         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
4015
4016         if (led->l_flags & BWI_LED_F_SLOW) {
4017                 BWI_LED_SLOWDOWN(on_dur);
4018                 BWI_LED_SLOWDOWN(off_dur);
4019         }
4020
4021         sc->sc_led_blinking = 1;
4022         sc->sc_led_blink_offdur = off_dur;
4023
4024         callout_reset(&sc->sc_led_blink_ch, on_dur, bwi_led_blink_next, sc);
4025 }
4026
4027 static void
4028 bwi_led_blink_next(void *xsc)
4029 {
4030         struct bwi_softc *sc = xsc;
4031         uint16_t val;
4032
4033         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
4034         val = bwi_led_onoff(sc->sc_blink_led, val, 0);
4035         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
4036
4037         callout_reset(&sc->sc_led_blink_ch, sc->sc_led_blink_offdur,
4038             bwi_led_blink_end, sc);
4039 }
4040
4041 static void
4042 bwi_led_blink_end(void *xsc)
4043 {
4044         struct bwi_softc *sc = xsc;
4045         sc->sc_led_blinking = 0;
4046 }
4047
4048 static void
4049 bwi_restart(void *xsc, int pending)
4050 {
4051         struct bwi_softc *sc = xsc;
4052         struct ifnet *ifp = sc->sc_ifp;
4053
4054         if_printf(ifp, "%s begin, help!\n", __func__);
4055         BWI_LOCK(sc);
4056         bwi_init_statechg(xsc, 0);
4057 #if 0
4058         bwi_start_locked(ifp);
4059 #endif
4060         BWI_UNLOCK(sc);
4061 }